Not yet but it's being worked on and it's close now
Use a different homeserver for matrix and it's way faster then the default matrix.org one for the element clients servers joinmatrix.org is a good list
Everyone doesn't use the main HS sure it is alot of people but alot also don't use it
Some bridges support encryption and even if they don't there's a tool to make it so they do pantalaimon
That would be nice yeah, maybe have a list of trackers in the options the user can control to add to torrents automatically
I've seeded clearnet torrents to I2P peers many times with BiglyBT without those torrents having I2P trackers, so it's definitely possible
You can have exit nodes, called out proxies on I2P they just have to be manually setup
It's not super fast but it's more then usable, you just need to get lucky with fast routers in your tunnels
Out proxies are a thing
If you can find the torrents you want on I2P, it's sadly alot smaller then clearnet for torrents currently
not all games on steam use the DRM