Not having root is done on Android for some very good security reasons to be fair, it opens up a giant attack surface and risk for all kinds of malware and nasty stuff to take advantage of. I don't think it's done completely in malice as you think. Its a very important part of the app sandbox and Android's security model at large.

With that said, I do think that people should have the option to root if they want to, I'm not a fan of OEMs like Samsung and whoever else purposely preventing people from rooting at all costs. I think people should be able to do whatever they want with their own device, root just certainly shouldn't be the default, and users should be aware of the risks if they choose to use it. But I do think it should be a possibility for those who really do wish to do so.

With Android, it all just comes down to the OEM and variant of it that you're stuck with. As a whole, I think its an amazing project and OS, though unfortunately Google, and especially OEMs, tend to make a lot of bad choices. It's similar to Linux as a whole in that aspect. You've got options like ChromeOS which are a nightmare for privacy and user freedom any way you look at them, but then you've got your traditional distros like Debian, Arch, Fedora, etc, which are the exact opposite. Its an important distinction.