When using examples, please indicate the reason for the suspension.
95% of the time, it has to do with the illegal issuance of new shares (what is a stock scam if it's not about selling new shares?). Understandly, MMs don't like to be party to trading in questionably issued shares. For this reason, they will usually have no more part in the trading, once a company's shares come into question by the SEC.
If on the other hand, the issue pertains to accuracy or validity of PRs, and has nothing to do with the shares themselves, then MMs have little concern. Afterall, they don't care about the company. MMs only care about the shares they're trading.
Years ago, BCI* MMs got stuck with millions of counterfeit shares. It happens.
It's all about the validity of the shares, as far as the MM is concerned.