Maybe the earlier working years and experience, as well as money saved, was worth more than the opportunities the degree could open up. If not, and being passed over for jobs later in life is becoming a problem, maybe that original assessment was incorrect.

This is generally only something a person can have certainty about in hindsight.

There’s always value in completing, but if you instead do something more valueable, and can explain it, it might be the opposite of a red flag. But the comment explicitly stated “dislike the content”.