What sometimes helps is to use more words to explain what you mean, and keep calm and respectful even if they go off anyways
Shorter soundbites are fun, but they don’t capture the nuance. Saying “I agree with X, but also think Y” makes it clear what you think.
If someone still tries to pick a fight, it’ll be clear to everyone else reading the comment chain. Can’t win over everyone, but this might win over some while avoiding another pointless argument