(Not talking about edge cases like BitTorrent or such. But if a carrier advertises watching streaming video on my phone, I don’t feel guilty downloading an app update. If their tower couldn’t handle that, it’s on them, not me.)
ISPs have done a great job shaming people who use their service for what it is supposed to be. It's 2024, and we should all have fiber to the home by now. But no, they're only working on deploying more shitty wireless connections to everybody and letting all the land-based services rot. Fuck them.
Wireless is a bit different in that there's inherently limited bandwidth. You and I share the same RF fields. If I'm monopolizing them, you can't, and vice versa. Now, if you have a home 5G hotspot, do what thou wilt. Those are advertised to support a household. If they can't, they shouldn't advertise it. However, if I were at a baseball game with 40,000 other people, and I couldn't text my wife because I saw you having 300 torrent connections open on a laptop just because you could, I'd still kinda wanna throw a beer at you. It's like listening to music out loud on the bus. You can; you shouldn't.
There's no chance the carrier can give every phone in a cell full bandwidth at the same time, they rely on only a handful of people using their connection at any given moment.
This is a noble activity and I salute you for it, but I'm pretty sure that towers have traffic shaping that manage QoS and fairness for you.