Possible, yes, even probable given the state of protest against the company. (Arson is a felony, but if we're now going to recategorize arson as terrorism, that's a big can of worms to open)
However, it's not like Teslas haven't had the reputation for being fire risks for years.
https://medium.com/@davidsehyeonbaek/why-tesla-evs-catch-fir...