So if I'm following this right... Let's replace the term Zionist with Nazi.
Person 1 says "Nazis deserve to be murdered." Person 2 spouts rhetoric that sounds very Nazi-like. Person 2 gets called a Nazi. Person 2 now goes on a campaign saying that they're receiving death threats because of the transitive property and makes the nuclear move of defederating.
Is that what's happening here with Kaplan?
I think it won't be terrible as Mac and Linux share a common ancestor. A fair bit will feel familiar, but it is fundamentally different in some regards. The Finder system may confuse you for example. But it sounds like you don't really use it for much, in which case, I don't think you will run into issues. It will probably require less tinkering than Linux. But at that point, if all you need is a browser, why not just get a Chromebook? If you really want Apple though, the Neo would be perfect for you. You are the target audience.