I don't think that he and only he can solve the bot problem, but with question stated this way - Tesla may currently have the best machine learning hardware on the planet. With people reports + second wave of hired people for marking what is spam and what is not, this seems like a fantastic place to shine for ML - especially when you have all accounts data and full graph available.

I would not bet on it - as far as I understand it, fighting spam is like 95% of what engineers at Twitter do and openly available ML on GPUs seem plenty strong - but it is a possibility.