I do think there is a lot Trump can do to hurt the IRA without repealing the actual laws... for instance he could defund the IRS so that clean vehicle tax credits take years to be processed (like he did with USCIS), for example. Or, put people in charge that just never implement the proposed changes (ie, the electrification of the USPS fleet).
Why do you think Tesla would survive the Chinese EVs? Chinese EV makers have a massive head start and have been heavily subsidized by the CCP, they've now made too many EVs for the Chinese market. Tesla vehicles are selling less and less each quarter (even without Chinese competition) - if they keep going with this trend they'll be in big trouble before the Cybercab hits the streets in 4 years. They haven't made any money on AI or robotics yet, and Tesla Energy isn't doing anything particularly innovative to compete with all the new market entrants into that space. Trump's policies will hurt Tesla Energy and if Biden stays in then Tesla/Elon will be charged by the SEC, EPA, FTC and NHTSA.
I really truly hope that $TSLA holders start to derisk... but I know they won't.