You can indeed. You end up with a permanent small water mark on bottom right hand side of the screen as a reminder to activate. Currently you can keep it like this indefinitely.
You cannot personalise the desktop but I think that is all.
This post's title will surely be a finalist at the inaugural fediverse dementia inducing post title awards!
This is really poor journalism. This narrative of Fox creating Trump is bogus. In the 2015 Republican primaries Trump began as an outsider. All the big money was on the anointed Jeb Bush, who Fox largely supported. After Bush was eliminated then it was Ted Cruz getting the red carpet. Actually Sean Hannity was one Fox presenter who kind of rebelled and gave a voice to Trump.
Only when Trump had prevailed over Cruz did Murdoch bend the knee. Murdoch has been a political parasite for decades in Australia and Britain. He doesn't create anything really, but just backs whoever is convenient for his own benefit and kingmaker ego. Trump created his own grass roots movement and had to fight his way up through the Republican political establishment, as did Bernie Sanders with the Democrats who unlike Trump could not overcome the nefarious bullshit thrown at him.