I've advertised quite a bit on Meta, and also hired people to do it for me. ROAS, for me, is the most important metric, but it's not the only metric people look at. Speaking from experience, plenty of people like to look at and optimize other metrics.
Advertisers measure ad campaigns by ROAS (return on ad spend). This is driven by actual dollars spent, cutting out all bots right away.
Clicks / views / comments are irrelevant except as far as getting the ad to show for actual buyers.