Uh, yeah, every decade in Japan brought different visual styles. Different ideas of cute, different ideas of sexy, different guidelines of what's acceptable to present. 2020s don't look similar to the 2000s, 2000s don't look similar to the 80s/90s, etc. Hell, you can almost tell which decade something came from by the visual style if you're waste-deep in manga/anime. Different generations like different shit. It's like getting frustrated that a 90s manga doesn't have all the over-the-top page-shitting detailed effects of a 2010s anime.

Economics may play a factor too in paying high quality artists, the top two existed or were in development around the beginning of Japan's permanent recession, the bottom two were made some time after. Said recession also probably changed the outlook on life of many men/women and thus changed what kind of stories they wanted to make. Evolution of computer technology also made the hurdle for standalone or small groups of artists to make their own VNs much lower.

The hatred of moe is a fossilized argument in the weebspace at this point. The common anime styles have shifted that one could find other things to complain about.