It should be part of the listing period, it's not needed for the job, it should be there at all, the message to the none university educated is clear, we're not wanted.
As an example, when writing copy, you don't want someone who makes the many grammar and spelling mistakes you made in your post right above. Because, while you can fix it with copy editors and the like, that adds extra impedance to production.
I would also be a poor person to hire to write games, because my own spelling/grammar/etc is really not up to snuff. And at first glance, my copy has fewer errors than yours.
I think you swapped should for shouldn't twice, used none university for non-university, and your sentence structure is this long comma-splice.
That kind of communication skills issue makes producing game content and collaborating harder. So, yes, they are going to want to not hire someone without that.
And most people with a 4 year degree from a decent liberal arts university will have written a huge amount of copy, and that copy will have passed minimal writing standards. They will probably be exposed to the literary and story telling tropes of one or more cultures to mine for game design. They'll have shown themselves capable of self-managing their education and succeeding at a task that upwards of 1/3 of those who attempt it fail.
It sucks, but successfully getting a degree is an accomplishment that hiring departments can use that is far easier than testing and verifying the myriad of skills that it covers.
And with 40%+ of adults having those qualifications, with a far larger percent of people who
have those skills in the group and a far smaller number outside the group, this helps a [censored] tonne.
As someone doing hiring, know what happens when you put out a resume with qualifications listed? You get huge numbers of unqualified people applying. Like, looking to hire a programmer in language X, you get 20 people who can't write a program more complex than "hello world" for every 1 that can.