That wasn't a "Twitter mob" that invaded the Capitol building. We're talking about a company taking umbrage at an employee's specific action in public.
Let me show you the difference: Actress Gina Cararo has been coming under fire on Twitter for several months because she refuses to kneel to the LGBT community and identify her "preferred pronouns" in her posts. They have been demanding Disney (which generally champions the LGBT community) fire her from her current role on Disney's The Mandelorian.
Now, Cararo has not actually done anything in particular against the LGBT community, and she certainly hasn't broken any laws (and, yes, being beyond the barricade line at the Capitol, being in a location where the police have told you to vacate is breaking the law).
Firing her for essentially doing nothing is far different from firing a lawyer for being unlawfully on Capitol grounds.