Blame PotD. My general rule of thumb when I see someone with a Kinna weapon these days is to immediately check their search info and gear. If I don't like it I'll see how the player performs during the dungeon and if it's really bad I'll start pointing out things to improve on. Most times there's no point in doing so though because with my experiences those players are convinced their method of playing is the most effective and that when you speak up about it you're talking nonsense.

Now, not getting any coms is not the end of the world (I stopped caring after getting the magitek mount), though it is nice to get some acknowledgement for your efforts. Like the other day, I had a newbie dragoon and white mage in Cutter's Cry during leveling roulette while I was playing paladin. I could see them struggle (which, to be fair, is understandable because this dungeon imo is the one where players get taught that mechanics aren't always the tank's job), so I slowly starting pointing what they could improve on and explained boss mechanics where needed. Walked away with 2 coms and a good feeling of helping newbies.

It's not all bad, it just depends on how you handle the situation. We only know your side of the story here, and I can almost taste the salt. Did you even speak up in a polite manner about how the dungeon was going?