I've given some simple examples, no mathematical proofs, if that's what you're looking for. But, I suspect, no matter what I provided as proof, you'd be saying the same thing.
So me some proof and I'll change my mind. But you do not have any - just a bare, unsupported assertion. Those examples are just random speculation.
It's as if I'm sitting here and telling you that it will hurt if you jump off a cliff, but you keep saying, "That's just your opinion. Forty feet doesn't bother me that much."
4 inches more like. It's not worth the effort because you don't have any proofs at all.
I don't object to a character obtaining Skill-3. I object to the regularity with which characters obtain Skill-3 if the MGT rules are used by the book.
I'll grant that, by using Connections, a player can guarantee a level 3 skill, but, by my reckoning, based on multiple chargen processes, only about 10% get there by random rolling, even using my method which tends to increase specialisation in particular skills. I suppose you could say 10% was regular, but too much? Not in the slightest.
In other words, if I take the time to write out a long proof of what I'm saying, proving that I am correct, chances are it won't be read. And, even if it was, it wouldn't change anything.
So why go to the trouble?
Magnificent cop-out. Are you really going to change any minds by making up a problem and then refusing to prove how it is a problem?
Either show how you are right or shut up about it. Constant repetiton does not make you correct.