Personally I think this thread kind of illustrates the problem with the sport as a whole, and why it's struggling so badly. It's incredibly tribal. People, from individuals, through dive centres/clubs, and right up to training agencies are all incredibly tribal. They are happy to sing etheir praises of *their* perferences/destination/centre/club/agency, but not of the sport as a whole.
It's ultimately self defeating, as more than pretty much any other sport, we rely very heavily on infrastructure, from equipment manufacturers, local shops for kit servicing and fills, clubs/schools, to dive centres/resorts, boat operators and all the rest. Most of this infrastrucure is used and provided collectively, in that a dive shop fills and tanks and repairs regs regardless of wether you dive every weekend or two weeks a year, wether you trained PADI or BSAC, wether you dive reefs or wrecks, tropics or temperate, reccreational or technical, back or sidemount and any other number of tribal splits.
The sport desperately needs a collective voice, and also needs to find an open, inclusive voice - otherwise operators will continue to go under, and not in a good way, and that means less diving for everyone. It's a shame the DIABC portal ahsn't been kept up to date, as it's a great example of how collaboration can work to creative an appealing, inviting message to get people in the water. Which is what matters, people in the water, exploring and enjoying the world under the waves - doesn't matter if it's Humberside of Hawaii, and wether they are drysuited or wetsuited - just help people, the more diverse the better, discover the other 70% of the planet they would otherwise never have experienced.