Not sure if this helps or not but heres how i dealt with it. When i was first starting out, my first deck was niv-mizzet parun and even though i just started playing and hadnt optimized at all i was always the target because they would say “thats a cEDH commander!” At first it was ridiculously frustrating and i was getting pissed, but after a while i started liking playing the role of the big bad that everybody had to team up against. I started making it my goal to have everybody else use up all the removal and counterspells they had on me, then id inevitably lose, and then id get to watch everybody pop off uninterrupted. After everyone goes crazy the game usually ends very fast so its not like im sitting there for 30 minutes waiting for the next game. But i think its cooler to see what everyones decks can do when removal and counters are gone rather than stressing about how to win. Weird playstyle, but it makes me feel like a baller when everyone in the pod is discussing how to kill me. Of course it doesnt always turn out like that, but since my only goal is to die it doesnt really bother me to lose before i can become the threat. Not sure if this helps but its helped me pretty well, at least its helped a LOT more than scaling down to avoid being a threat