The guy on the left (Linus Sebastian) is the CEO of both Floatplane (the app) and Linus Media Group (known on the internet from their Linus Tech Tips tech enthusiast videos). The guy on the right is the Floatplane team lead.

Linus Media Group made an alternative to Youtube to not put all of their eggs in one basket, that's what eventually became Floatplane. There's more creators on there, basically all in the tech Youtube space, but they do extensively use their own streaming platform of course.

Technically and legally no since Flotplane doesn't make videos. Floatplane 'rents' office space from Linus Tech Tips, so many employees were previously at LTT and thus they work closely together, but they're different companies and LTT is just a creator on the app.