If you use my snippet, I want your game. If you don’t agree, then you can’t use my snippet. The purpose of the GPL is simply to prevent people who don’t share from benefitting from people who do, which I think is pretty fair.

That seems a somewhat contrived example. Yes, it can theoretically happen - but in practice it would happen with a library, and most libraries are LGPL (or more permissive) anyway. By contrast, there have been plenty of stories lately of people who wrote MIT/BSD software, and then got upset when companies just took the code to add in their products, without offering much support in return.

Also, there’s a certain irony in saying what essentially amounts to, “Please license your code more permissively, because I want to license mine more restrictively”.

You still own the code you release under GPL. the restriction you are describing is actually caused by the non-copyleft licences you claim to prefer. If you choose to use MIT, you are limiting which libraries you can use. If you had picked GPL to begin with, you can use any library.