I assume that's why they wrote good and not successful.
It's an average software product with incredible scaling behind it and a lot of elbow grease to keep it chumming along, but it's not great software by the definition of "bugs actually get dealt with"
Not saying that this is the trade off you have to make but if you have a working mode in place that achieves usage and money somewhat consistently i can understand being hesitant about changing it to optimize for less bugs instead.
Similarly, most people don't put much stock in the salesmen of a product describing their own product as great.
Stop debasing all of quality to profitability.
Weapons are a great product for weapon dealers and manufacturers as well, just not so much for the people killed by them (or their families, or survivors)
So sure, if making a shitload of money is the metric, YouTube is a great product.
That wasn't the point of the person you answered to though.
Why do you think they would compromise how good their software is merely to save lives?