Yeah. For me, the way I looked at it again was that maybe he's just tired of all that scheming and that stuff is kinda past him now. After the massive events of the first trilogy, him being swallowed by a kraken, escaping death so many times, the Davy Jones encounter, watching Will get gutted, well, I can see how maybe that could change someone, including Sparrow. If I went through all that shit, I'd probably be a less caring drunk all the time too.
I didn't think it was out of character, just that he's been through so much by this point and we can assume chronologically it's been what... 10, 15 or more years since those events and I think eventually someone can just run out of gas. I thought this was highlighted in the bank robbery scene actually. He was completely careless and managed to get drunk and fucked a girl in the safe, which I found hilarious but it gave me that sensation that he just kind of doesn't care anymore.
I can see how that would be disappointing if you need him to be exactly like he was in the first movie, but there's so many other things I like about these movies in general that a more washed up and careless Sparrow doesn't really bother me. It's why I was really happy with the new characters, how they tie into everything, the new lore it established, and what their stakes were-- it didn't have to rely on Jack to carry it.