I agree this is ridiculous - I can't understand why Ron is seemingly promoting Jimmy's racism.
I personally suspected that Jimmy has incriminating photos of Ron with an underage girl,
...or possibly even with a dead boy, ...but Ron neither denied nor confirmed my suspicions when I asked...
...so who knows?
It's a pretty bad precedent if you ask me, ...but this isn't the first time Jimmy has gotten his way by being disruptive. Can't really blame him though. He's supposedly a grown man, ...yet he's unemployed and sponging off his parents, ...and they allow this. Reward for bad behaviour without consequence or accountability, appears to be all he knows... so perhaps maybe Ron is just trying to maintain some consistency in his life? Or maybe Ron thinks he's so mentally unstable that to thwart him in his endeavors might prove too much for his fragile underdeveloped mental state, ...and Ron doesn't want to see him go over the edge? Who knows? It's all speculation at this point because Ron refuses to answer.
Do incriminating photos of Ron exist?
--or--
Is Ron preventing another Patrick Bateman from being unleashed upon society?
--or--
Has Ron simply undermined his own credibility and respectability by not only consistently permitting, but then rewarding this indulgence?
Enquiring minds want to know?