Common sense drives the best and brightest away from public office.
Nobody who is properly equipped for the job actually wants it.
Those positions are filled by people with a desire for prestige, power, or wealth.
Only the unscrupulous have any chance at big wins, because they are the ones who with do 'whatever' it takes.
I don't think this vitriol will drive any of that type away, but it could have adverse effects on the few idealists in the mix.
They are generally ineffectual anyway though.
The best and brightest have never sought out public office, they spend their lives doing. Unless they are 70 year old businessmen who don't like the course their nation is taking and step up
The "best and brightest" have always had greater incentive to work in the private sector, regardless of whether their motivations are selfish or altruistic. Vitriol might dissuade the thin-skinned, buts that's a part of all positions of power, public or private.
Someone who wants to be powerful goes into business because it pays better, and money buys power.
Someone who wants to make the world a better place goes into business because the money they make in business can affect more change in government through lobbying than any single elected official can through policy.
The only people who go into state or national politics do it for the fame. Its an ego move. Trump wanted it because people said he couldn't do it. Obama wanted it because he wanted to be the first black guy. Bush Jr. wanted it because daddy did it. Clinton wanted it because attention from women inflated his ego. Bush Sr. wanted it because daddy did it. Reagan wanted it because he craved the spotlight. Ect. And all of these men were allowed to run because a man with an ego is easy to control.
Every president during our lifetimes has been defined by their external locus of control.