I don't see anything that "breaks RP" At worst, it's poor RP.
There are strange people who say that kind of stuff, regardless of if it's weird or not. The intent wasn't ERP, so in reality, I don't see any rules that it is breaking. It's just merely irritating if anything.
He did admit to having a warning for suicide, which is a no-no, but he got his warning and didn't do it again.
Also, a week-ban for getting drunk IC? That's just silly, now. Arguably it breaks the "Try to perform your job to a satisfactory standard" rule, but even then, if he had been doing his job satisfactorily, it's iffy to me. Either way, he received a week ban and didn't do it again.
Saying creepy shit isn't ERP, and if that's his idea of how to initiate ERP, he's got serious trouble with social cues.
Honestly, this doesn't seem worth more than warning to me. Besides, I think it's fun if some characters are eccentric or dumb. Not everyone can be a stiff with a stick up their ass.
Did you happen to be present when the OP in question got banned? If you have any context to support their case that would be nice.
Yeah, I was actually, we were in maintenance tunnels due to a radiation belt. There was no ERP. He was bullshitting around during that, but after it ended he went straight back to his job.