Why would you post that without including information about the event and brokers you are referencing. You're not really adding to the information content on this site.

I assume you were talking about this event: https://www.leaprate.com/forex/liquidity/algo-traders-worsen...

It is completely clear that they betrayed their customers' trust.

I know some people think "but that's not illegal so they did nothing wrong". Those people are bad and should feel bad. And I think in this case enough customers are angry that robinhood will not escape the consequences of its actions.

I only said I would be unsurprised to learn they acted illegally.

I admit the "suck at lying" thing is more my opinion than fact at this point.

Do Robinhood's terms guarantee that their users can buy any stock at any time? Does Robinhood in any way ask or imply that their users cannot use another service? I'm just not sure what trust they betrayed here.

Trust is not covered by terms.

And you should read about how that was dealt with in July 2017.

Is this the Swiss Franc thing?

Yep.