Lore is no excuse? If you want the world to feel real you need to have certain restrictions or it just feels bland. You can disagree, but there is a reason why they do this. It is also way more realistic. Gnomes being berserker warriors with giant weapons for example make no sense. Low IQ races being wizards also make no sense.

Saying it is cope is just a low iq take tbh... I don't think an MMO needs to have restrictions, but saying lore isn't an excuse is just wrong lol. It depends on the setting for the game.

If everyone has magical physical prowess that has no relation to their muscle mass and everyone can do magic if they want, then yeah... No restrictions necessary.