Very nearly every company I've worked at that uses Scrum uses story points, velocity, etc., as a means of measuring how good you or your team are. Forecasting is a secondary purpose.

I've seen that justification time and again, and it feels disingenuous every time it's said. (Feels like a corrolary to No True Scotsman.)

I've also seen scrum used regularly, and everywhere I've seen it has been broken in some fashion. Enough anecdata tells me that indeed Scrum, as stated, is inherently broken.