I THINK this is the takeaway:
- If you test positive for covid, don't tell the airline - get retested
- If you test negative after testing positive, don't tell the airline
- If you test positive and are symptomatic and determine that you MUST recuperate in Cozumel, cancel your flight without telling the airline why you're canceling so you can retest to go home when you're feeling better - and get a letter from the doctor saying you have recovered
- Check with your airline to see what THEIR policy is IN MEXICO to determine how long you will be required to stay in Mexico after a positive test, if you do have symptoms and have to recuperate there.
The guy on the FB post was telling his personal story and I have no reason to suspect he was lying. I think his mistake was in admitting, up front to United, that his wife tested positive for covid. Her symptoms were a little bit of congestion for one day, three days prior to the test. But once United knew she had tested positive they decided how they were going to apply the 'rules'. This is a problem all over the place - there's no consistency in how the 'suggestions' or 'rules' or 'regulations' will be applied. If United wants to be more stringent in Mexico there's nobody who can tell them 'that's not what the cdc says' and get home faster. (Unrelated, but related to the inconsistency of applying 'rules', there's a preschool near here that says that for 90 days after your child has had covid, they won't have to quarantine if exposed to covid. But not all preschools or elementary/secondary schools have that rule.)
What we see on the cdc's website range from 'suggestions' to rules - they also recommend that we get tested 5 days after returning from travel, and to quarantine for two weeks after returning home. NOBODY does that! (Well, I don't - not intentionally anyway - but I work from home so I may quarantine for 2 weeks and not realize I've done it! Time flies when you're having fun.)