Yeah. It served it’s purpose, he bought a mass social media outlet, let it run wild, influenced elections, spread hate and normalized even more extreme views to fuck with all the world. The damage is done. Claiming doing something good at this point when it should have been done at the early signs but everyone would call you paranoid is just non sense. Crying wolf and all that bullshit.
Because the linux is explicitly only gpl2. If it was gpl2+ then gpl3 code could use it. It’s a very known problem around the incompatibility of some licenses. The kernel people explicitly only want to use gpl2 and refuse changing the license because it’s better for companies that want to use linux without giving back the code.