Bravado, partying, spending money, is highly common among prize fighters, since... ever.
Most importantly, it's also a gimmick. Conor is playing up the act. Popularity makes money in prize fighting.
Probably the best reply so far, although as I say his stock really is falling and that is from fighters being less interested now, fans also losing interest so his pull although is still there (no doubt), it's dropped and so has investors wanting to invest in him too.
So the gimmick may have worked for a while, it's not doing much long term when surely but surely it's dropping and that's what I mean.
Then you get what I mentioned about The Rock in the original post which like I say is evidently there how that works way more than Conors who's going the opposite where as if you see The Rock, everything from sponsorships to investors to public interest is constantly rising to massive degrees non stop it's unreal and why, because the people love him.
It's not like Conor doesn't have it in him but it's probably that he doesn't want to which is what I mean is a shame.