This point has been made repeatedly elsewhere but it bears repeating. Market makers are getting rich off this trading. Robinhood's customers are not hurting from this.
Still, as far as risk to RH is concerned - if this kicks off a change via their customers, regulators, or legal action the change is probably not in their favor.
If you relocate a government agency HQ to an area that doesn't have any competitive jobs, you're making it more difficult for that agency to attract and retain tallent.
Just by moving the office in the first place you'll hemorrhage experienced personnel who don't want to move their lives across the country.
To proponents - that's a feature not a bug. Less effective regulation (and eventually deregulation) being the goal.