Whether AHB or any hot hive is a problem depends on a person's situation.
If a person has their hives in locations 100's of feet from the public, then I can see a hot hive not being a problem.
I am a hobbiest and keep my hives in my backyard. A hot hive is a big problem for me because a road and sidewalk are about 20' and 50', respectively, from the hives, not to mention being similarly close the normal day-to-day foot traffic of a typical residence.
Last year, I received a nuc from New Mexico, which, over the course of about 10 days turned into a very hot hive. The bees would come pouring out of the hive on the attack like black oil whenever I got within 20' of the hive. The cloud of bees around my head would be so thick that it was hard to see what I was doing when working the hive, the smell of alarm pheromone overwhelming. The bees would follow me for 100's of feet after I worked them, only giving up when I walked through bushes. The bees would chase pedestrians and bike riders down the road. The bees would attack the lawn mower guy as he got out of his truck. The bees would attack the mailman and UPS guy as they made deliveries to our door. We had to sprint between the garage and the house to avoid being attacked. After working the hive, a cloud of bees would form at the nearest window wherever I was in the house, following my scent to attack me. The situation was completly unworkable and caused some serious domestic strife. I called my mentor for help finding a location to put the hive while I requeened it, and he wouldn't touch the situation. I made the same request to my bee club for help, and no one lifted a finger. I finally was able to move the hive to a friend's outyard and requeened. The next option would have been a spray bottle with soapy water.
While it is true that Italians, Carniolins, etc., can be that hot, it would be an anomoly. While it is true that AHB could be docile, AHB are far more likely than Italians, etc., to be hot, and therefore, their significant presence in the local gene pool raises the likelihood of unacceptably hot hives for me. I can not keep such hot hives at my house. I have no other place to keep hives (the hot hive moved to the outyard, mentioned above, being a favor from a friend). If the situation evolves to where a signficant percentage of hives are that hot, I would have to give up beekeeping. I think a large percentage of hobbiest beekeepers are in the same boat.