All they had to do was make KSP but with more efficient graphics. Instead they made it with horrendously unplayable fps and only a fraction of the rocket parts.

That's because the new devs are made up of faggots and women. It reminds me of when DICE went "diverse" and all their Swedish engineers left to go make The Finals, and the Nu-DICE had no idea how to optimise or improve or maintain Frostbite, so Battlefield 2042 ended up with less features, destruction, and visual polish than Battlefield 4.