CapnZapp
Legend
This is not the 5e baseline, and would lead to vastly more magic items than expected.NPCs are more like PCs than they are like monsters. If you have a level 10 NPC, then figure out how much magic a level 10 PC is likely to have, and give them that.
Not saying doing it is wrong. Saying giving it as unconditional advice is, since it would lead to a very magic heavy campaign (compared to the 5e baseline)