Imo hes being nice by saying it wasn't him, maybe not necessarily nice but he's not the one unfriending you, he still wants to be friends with the person who broke the rule even though they broke a rule and will advise you to not break the rules, instead of stopping the friendship with you because you broke X rule of the server, which is common sense to not hangout with people who do wrong things, this can be played to real life.
I really don't see anything immature about any of the replies he's posted in this thread, if anything, I see 2 replies that you could misinterpret as "immature" but then again he's playing alone, first reply being to a joke of my own saying hes the nicest after mayel, and him replying with no kuni is nicer, obv a joke, and the "bro is telling me to recruit" quote but that is literally just playing along, a staff member can joke around if hes not on staff duty and the joking around is mutual, please do reply if you think anything else he said is 'immature' as I might be wrong.
As a staff member I would really be careful with the -1's based on bias here, though I believe luquinhas isn't biased, he does bring up good points such as previously being banned for hacking and being permamuted for idk what reason, I imagine toxicity.
Still after all this I believe it wouldn't be crazy to add camposz as a Sentry, Imo he's genuinely changed for the better