Well, they twist arms to get dive shops, land owners and boat operators to buy into their rules, rules that are primarily designed for OW divers.
The first time it happened to me was back in the early 90s. I had an OW card and had quite a few dives on wrecks in the 90 to 130 foot range. My deepest dive then was 172. One day I showed up at the dive shop and my OW card isn't good enough. Now, I need this new "advanced" card to go on dives deeper than 100ft. I resisted for years, but eventually got tired of sitting out the dives I wanted to do and got AOW. Eventually, they lowered the depth rating on OW to 60ft, cutting off even more divers from dives they had already been doing.
Solo is the same category to me. I've been doing solo dives since day one. And it's bad, bad, bad. Can't say how many times I'm been chastised for diving solo, even by total strangers. Suddenly, now that there's a cert for it, it's okay. Assuming you have the cert. Anyone else is cutoff once again...
At least they aren't enforcing the Drift & Boat Diver certs, at least not yet...