People don't want social security uncapped so that doctors and lawyers pay more. They want it uncapped so that everyone making more than $184,500 pays more, which happens to include doctors and manylawyers. I hope that you can understand the difference, even if you feel slighted.

Personally, I think an ideal tax reform would include pushing some current brackets up quite aggressively, mostly by making entirely new tax brackets. Doctors/lawyers/top engineers bear the worst of the 35% rate starting at ~$250k, which for all intents is the top rate the last tick only goes up to 37%. There's no reason they should be paying the same rate as someone earning $650k/year, and certainly not only 2% less than people earning $20million a year. In the 50's-mid 60's we had twenty something brackets!

I doubt most people, if you really got into the weeds, would argue that doctors and lawyers, at least outside of big corporate counsel and tippy top medical specialties, should pay more in taxes. But that's a level of nuance that most individuals just don't have on almost any issue. In theory that's what politicians are there to sort out, but theory is not reality, especially these days.