I remember when it was free and test versions were being shilled here it sure came a long way, shame about KSP2 but the jew publisher kinda fucked them over from the start, it's still fucking insane that it's being sold for full AAA price in early access yet it's completely abandoned at this point.
check out the new game kitten space program which is more of a successor and being built with a custom engine so they don't have to deal with unity quirks
https://www.youtube.com/watch?v=mp4IIcM66MU