OP, some of your points fall flat even if you're trying to say your list is being ridiculous, though I realise this probably got moved from General Discussion or something. Specifically, 3, the glamour part of 4, 8 and 10.
3. There's nothing lore unfriendly or unimmersive about hiring servants to perform menial tasks for you. Which is basically what retainers do. You'd have a better argument for saying they should adjust their loot tables to remove stuff like the primal weapons.
4. Glamours have been a thing since at least 2.0. Several levequests involve you acquiring items to dispel the glamours of some beast or another, typically voidsent. Heck, they're noted even as recently as 4.0's MSQ with the entrances to Rhalgr's Reach.
8. Garlean enemies that use magic are typically conscripts, and are therefore not racially Garlean. Like, the only possible example of a pureblood Garlean using magic that I can think of is Lucia maybe using the final blade beam-esque attack of Rage of Halone against a dragon in the Final Steps of Faith battle cutscene.
10. Hellsguard Roegadyn are noted for producing great mages as well as warriors.