I think you have to be a little more fair to rubik and his situation.
Everything you have an issue with is a long term effect of Sugar's departure from the server. Long term updates are easier to do when you effectively bury yourself in code (a la Sugar) AND you have a trusted developer (the one who bankrolled the server when in was facing bankruptcy in 2018) by your side.
Nowadays it's a one man team. Hell, if I'm rubik, I'm not trusting anyone in the community with source code. For very good reason.
Smart businesses (which is what TitsRP is, a business) do not drastically implement radical change for the sake of radical change. You might think things have gotten "stale", but there's a reason most other Gmod servers use rpdowntowntits_v2 and have custom classes. They want to be us, but come across as Temu versions.