Rather the opposite.

BSD is based on Unix, and Linux isn’t, so it is way more Unix than Linux is.

I’ve only used OneUI, on other skins can you not make it that shape?

I put stuff in places, then immediately forget where I put them.

View > user interface > tabbed

Seems to be under “view”

How do I use it?

I would do this but I don’t see any ads

Dual booting is done for you in the installer, at least for mint.

I might have to make his right foot a star

And several gigabytes of ram taken by chrome.

“An unknown error occurred.” And you spend hours trying figure it out for it to be something stupid that should just have a distinct error.

You can have it open on multiple at a time if you are not editing.

Setup syncthing between the computers. If the person is not tech savy enough, they can always force the tech savy enough person they know to set it up for them. The are no problems with the tech, people just dont know it exists. Even if you don’t or can’t use syncthing (iOS users), you can just be stupid and put it in the cloud.

Use a user agent switcher. Usually fixes the problems.

I wish to remove the rules

What is umatrix

The things you say you want are the complete opposite of lemmygrad (and hexbear). I’d avoid lemmy.world, apparently the mods there abuse their power, and the fedi is meant to be spread apart, Lemmy.world is getting a bit big. I don’t see why you should go to a Lemmy instance specific to politics, but the only ones I know of don’t follow any of the things you want. I’d say to join a general purpose instance, maybe one in your country? Or you could join a topic specific instance like the programmer one and the various star trek instances.

I think if this is implemented, it should be configurable for each community. On !perchance@lemmy.world for example, people posting there will often have just made a Lemmy account so they can ask for help. Not being able to post images would make this harder so they would probably just make a post in the old subreddit.