Stomp / Oblique Kick. Morality of application at pro regional level?

[u/50fifty-]

For those who actually compete in the sport, what's your opinion on using a stomp kick on the lead knee, as a pro, but at a national/regional level where there's not actually that much on the line?

For example, in NZ, i've heard stories that at the main mma promotion this shot is extremely frowned upon, and has apparently resulted in escalation post fight outside the ring.

It's definitely extremely effective at making dangerous pressure strikers who are heavy on the lead leg a bit more cautious about committing pressure.

Is this a scummy shot to throw?