The start of the game is a complete fiasco, now KSP 2 is not worth the money requested for it. Optimization at the level of amateurs, not professionals, fps drawdowns were visible in the first video, but the developers simply ignored it. Smeared textures of planets in orbit, poor aerodynamics, at times the launch complex becomes vertical, these are just my observations, I think the community has had much more problems.
These are not amateurs (probably) who did the first KSP, so I see no reason to justify them.