All calls are judgement calls - but this is silly. Make flopping a common foul. Or just don't call it, so you have the guy in the low post with a freebie with no defender. But a tech?

I think some flops are obvious. I also think sometimes guys go down in what looks like a flop, but it's actually more a function of balance and momentum causing them to go down harder or in a more exaggerated way than what you might expect for the level of contact.