That's great to hear! Welcome, and have frustrating fun!
If you don't mind me asking; in your context, what does "leftist" mean? When I hear the term, it's usually meant as a pejorative for some nebulous group the utterer doesn't like.
The transition won't be painless. You're going to have to learn new things, especially if you're familiar with the windows file system and how to work within that.
Linux doesn't use "drive letters" for mount points, so you'll have to learn that.
Many games through steam or other game managers are just as easy if not easier than in Windows. Some are more challenging.
If you're tired enough of Windows that you're willing to push through some discomfort and new learning, then it's time.
Once you get to know the distro you choose (Ubuntu is fine), you'll just work, and it won't get in your way.
Remember that "they" (at least here in the US) are as varied in opinion as are we.
The ones who have a sincere desire to protect children want them to have limited exposure to content online.
My personal thought is children should generally not be engaging others online, but it should be a social push ("don't talk to strangers online" "don't allow your children to be unsupervised online" ).
As for arresting child abusers, we seem to be in the habit of putting them in high office.
Lord help us. Hopefully we can hear it again!