The carebear vs. hardcore gamer issue with gaming was always a problem and especially in the MMORPG space before women.

What WoW did was prove the carebear model was more profitable and thus all gaming companies and especially MMOs chased the carebear model. This didn't ruin gaming so much as it ruined MMORPGs but frankly, MMORPGs were dying out anyway before WoW because the nature of hardcore gamers is that they don't like to play if someone else has an advantage and they don't like to play if they can't gain an advantage over someone else, so after any initial game launch, a group would gain an advantage such that everyone else (even if they were a hardcore gamer) would quit the game, then the server pop would decrease and the company would pull the plug.

Outside of MMORPGs, there's a lot of different reasons for the destruction of games. I was a pro CS 1.1-1.3 player and I could go on for hours about how and why FPS games were ruined... but instead I'll focus on single-player RPG games.

The issue truly does come down to hiring female developers. The reason is because of the difference in the nature between men and women. When men do fantasy, they create characters that they want to be like as the primary motivation and then they make these characters somewhat like them as the secondary motivation. A nerdy guy who can't get girls makes a hot dude with a harem but has qualities somewhat like himself (the dude is smart and isn't a brute). When women do fantasy, they create characters like themselves as a primary then make the characters somewhat like what they want to be like. So when you hire ugly adversarial feminist lesbians to program you fantasy games, what do you get? You get ugly adversarial feminist lesbians as the main character who also save the world (but as the secondary). This completely ruined gaming for men, yet it didn't necessarily help expand the target demographic because not every woman out there is an ugly adversarial feminist lesbian but when you hire these women to make your games, they will make the games about themselves rather than make the games in a manner that truly expands the target demographic BUT at the MBA meetings, the women will lie and say they believe this will expand the target demographics. The useless boomer executes/investors don't understand how things work and it sounds plausible so they go with it. The result actually has been the destruction of the video gaming market without the boomers or feminists either having a clue why.

A bunch of White men who understood things and wanted to expand the target demographic could still make video games that both men and women enjoyed without the bias that female developers would have on how they were making the games.

It's not that simple. Problem with dance routine raid encounter design is that there is no natural skill accumulation and each raid encounter is its own contained game. A group of players who figure out the dance routine for one boss has to learn a new dance routine for another boss and if one group member leaves then the rest of the group needs to wait until the new guy learns all the relevant dance routines. This is why guild recruitment turned into job interviews. This pathology leads to another pathology called "Is it too late to start X?" which is open admission for someone realizing they might as well not join the game mid-patch because of impossibility of acquiring enough dance routine knowledge / time-gated gear to meaningfully participate. The problem is further exacerbated with the game being effectively redone each expansion with drastic overhauls of talents, gearing and skill rotations. Someone who left the game in WotLK and rejoined now would be no different from a geniuine new player who never played the game at all. None of the original game aspects transfer between each itteration and each WoW expansion might as well be a new game entirely. A long-term player doesn't really accumulate any relevant experience or meaningful prowess so they become completely demoralized. Why bother learning your class's skill rotation when you'll be forced to re-learn it next patch? You could slave away in front of a training dummy in Stormwind and spend 2¬3h training your muscule memory to maybe perform on acceptable level (and probably develop carpal tunnel overtime if you play more than 1 class) or you could spend all that time and effort into doing some overtime at work in order to purchase a subscription from AimSharp or whatever 30$/month rotation bot people use these days.

Alas, my post is based on Shadowlands which made me leave in disgust so perhaps a good chunk of what I'm writing may not be relevant to current WoW situation.