[Citation needed]
Right. And he probably inherited the Starkiller base, under Republics nose.
The thing is this movie is just inconsistent.
Yoda acts like crazy, fake Yoda.
You should not sacrifice yourself to save others - see Finn, except when you should - see Luke, Holdo.
Snoke is cult leader, that amassed an army, money, huge ass star base, several ships, etc.
Luke gives up very easily, even if old Luke wouldn't.
Ships can't lightspeed ram, unless they do, etc.