My husband told me this the other day and it still irks me. Apparently my husband was chatting with his boss about one of their projects and my husband subtly mentioned “ahh yeah that's been a bit frustrating”. He wasn't intentionally complaining, just having an open conversation. Apparently his boss's reaction was “well we pay you to be frustrated”. My husband was caught so off guard and didn't have any comment back.
My husband now feels differently about his boss. He's concerned that as his manager maybe he would have offered help? It was just an off-putting comment for his boss to make. That's clearly not the mentality of a boss anyone desires to work for. This is why people strive for a semi enjoyable work place that's not so uptight.