One problem for Musk is he's been casting doubt on the bot numbers publicly, even before the deal. One of he's stated reasons for the deal was to deal with spam bots. Twitter has also reported basically the same 5% number in it's filings for years. If it really was a sticking point for Musk he should've done his due diligence before committing to to buy Twitter.
They can be interested all they want, doesn't mean they can back out of a deal unless they can demonstrate fraud or gross negligence on behalf of Twitter.
Probably not. There has been one MAC finding in the history of MACs. It was a trifecta of fraud, management throwing in the towel the moment the merger was agreed and a massive revenue drop.
Musk’s only hope is to get his banks to pull financing. That’s going to be tough.