why would i go through all this effort just to let some stranger torrent iron man on my internet account

Collective action can give all of us, including ourselves, more freedom. This isn’t about torrents, it’s about the freedom to use the internet without surveillance and monitoring of our every move.

Obligatory tragedy of commons reference

The tragedy of the commons is not a natural law.

It might be kinda something like a natural law:

- [Great Oxygenation Event - Wikiwand](https://www.wikiwand.com/en/Great_Oxygenation_Event)

The general idea of Meshnets worldwide is to turn 'my internet account' into 'our internet'.

all this effort = buying a router and plugging it into your computer.

Depending on your jurisdiction all this effort can also include legal fees, visits from the police and saying good bye to all electronic equipment for a couple of months while it's being investigated.

IIRC, also being registered as an ISP, giving them certain protections.