I heard it recently suggested on twitter dort com that fishing is a noble hobby as it likely produces a less painful death than they'd otherwise suffer 'in the wild'.
Is there anything to this?
I'm not suggesting that people switch their working hours for fishing, but what if it were traded for something neutral, like watching TV?
Not sure why your question was downvoted.
Brian Tomasik has written a few articles on this, including https://reducing-suffering.org/wild-caught-fishing-affects-wild-animal-suffering/
Overall, he thinks its unclear but urges erring on the side of caution:
"This piece surveys reasons why the harvesting of wild fish might reduce as well as increase the suffering of oceanic creatures. The net impact is extremely unclear. (...) That said, I would probably err on the side of not eating fish, especially because wild-catch fishing may increase the amount of fish farming in the future."