You are putting words in Kaldea's mouth. Nowhere in her post did she claim abuse wouldn't happen far as I can tell. She only mentioned wanting to play with people of a comparable skill level. Depending on the content, I share that sentiment. When farming Shinryu, I'm not one to stick around long if I notice I'm woefully out-dpsing the party. Why? I can find another group and kill it faster. Considering I'll need at least 99 attempts unless I get lucky (I did, thank god), I prefer fast and efficient. My stance changes in say, a learning party, where I'll be infinitely more patient.
This already happens. Have you ever been in a party that absurdly disbands after a few wipes? Odds are high the party leader had ACT running and didn't like what they saw. As noted above, I have ducked out of parties purely because the DPS was too low. Keep in mind, I am far from a top tier 99% player nor do I have such expectations from my peers going into pugs. Would I kick someone for low DPS? Maybe. If it were enough of a hindrance. The only difference now is I simply say nothing in regards to why I may kick. I haven't yet but the sheer amount of DPS who want AoE has made me increasingly tempted.
Frankly, Yoshida's stance borders on a self-fulfill prophecy. Player improvement won't come without some form of a parser since people need to see what it is they may be doing wrong to even realize it's an issue.