I’ve always tried to make the most out of free tools, so I’ve used a lot of FOSS tools for game development before.

I take it you’ll be giving back to the community and releasing your game under a libre license then?

No.

for a “crypto powered” portable console

PlaytronOS wasn’t made for this device.

No.

your work sees all your browser history

Possibly, if they’ve bothered to configure their machines that way. And only on the browsers they’ve configured that way and only on their machines.

Also, please don’t assume that your work operates the same way as everyone else’s work.