> You can just sit back and let people be wrong. Especially when it's about your employer.
Here's a better rule: don't argue about, comment on, criticize or even defend your employer in public at all. No good can come of it. You're almost never going to convince someone otherwise and the worst case is you find yourself quoted in the New York Times as "employee of X" (yes, I've seen this happen). Your employer isn't your family. You're not invested in how they're perceived. Your relationship is transactional if they're not paying you to represent them, don't. They will pick you rname on a spreadsheet and fire you tomorrow to slightly improve their bottom line.
As for arguing with randoms you generally want to quickly identify which bucket someone falls into:
1. People who reasonably disagree; or
2. The "my feelings matter more than your facts" crowd. You cannot reason someone out of a position they didn't reason themselves into.
IME you can quickly separate the two and as soon as someone is clearly in the second camp, just block them (on platforms you can) or stop responding (where you can't). No good can come of it.
Furhter engagement can actually turn someone into a "hater". They will follow you around, comment on everything you say and do and may go as far as mass reporting you. Don't let them get that invested.