My son has been working as a delivery driver for a local fast food place as a second job.
Last weekend he said to another driver something like
"I don't like the food here, it's very overpriced and I wouldn't buy it"
He was overheard, without him knowing by the manager.
Next day she texted him to say that she was very upset by what he had said. He apologised but then she cancelled his next shift and has not rostered him this weekend. So it looks like he has lost the job.
Personally I think the manager is being ridiculous but I'm interested to here what other people think.
So YABU - The manager is right to be upset
YANBU - The manager is being ridiculous.