Preferably the latter, nobody should really be using SHA1 for anything security focused and new

Looks like it’s not all that hard, jsut have to give home assistant some additional permissions to networking at a lower level of the stack

That’s not why port forwarding is important. Port forwarding is needed so that fresh peers can communicate with you and join the swarm. That act has the side-effect of speeding up transfers by allowing more people into the swarm spreading the transfer across more potential seeds/peers