So interesting turn of events with the PADI shop. I called to ask some questions, namely ones you guys recommended I ask, as well as some recommended by the Divers Ready! YouTube channel. I spoke to (on the phone) with the guy who sold me my mask, snorkel and boots, and who told me he was the main instructor before the instructor who teaches now. In store he wasn't very attentive, but I don't mind the "let the customer take their time" approach.
I asked him the following questions:
Q. What's the student to teacher ratio?
A. 16 students to 1 teacher
Sounds less than optimal, would you want to be in a class of that ratio? Strike one against them.
Q. Do you teach neutrally buoyant?
A. No, because it makes things too complicated, we find it easier to teach students on their knees
I think previously in the thread you stated you wanted to work neutral buoyancy and trim immediately. Strike two against them.
Q. How much of buoyancy and trim do you then cover in the class?
A. Two drills, per the PADI standard
Again this doesn't seem to jive with what you were looking for? Strike three against them.
Q. Can I bring my own BC and regs, and would that be a problem for any of your skills?
A. Yes, you can, and no, assuming that it doesn't interfere with the class. <-- perfectly fine by me
This is how you started the thread, you want use your own gear for OW class. Plus one for them, since they seemed willing to allow it.
Q. Do you teach anything beyond the PADI checklist?
A. No, that would be a violation of the rules.
Q. I didn't mean teach 120 ft diving in an OW class, I meant small things like gear overviews, additional trim and buoyancy exercises, things to make new divers more well rounded (this question is directly from the Divers Ready! video)
A. No, but we offer additional classes that offer those things.
Seems like you want something for free here and are not happy with the structure of how they do their OW class. Straight up they want to be paid for teaching small things like gear overviews, additional trim and buoyancy exercise. But the hell with that, they are not offering what you want or what you think should get in an OW class, strike four against them.
Then the owner said to me, "Based on the questions you're asking, it would be better if you were trained by another shop, not us"
Considering you had bought equipment from the shop and were an existing customer, it would seem that the owner is not a good example of friendly customer service. Nevertheless, seems like he did you a favor? Except for using your own gear he pretty much did not have the answers you were looking for. Would you have signed up for the course at his shop if he said, "so when do you want to start"? It doesn't seem like it from what you have posted here. Like it or not, that shop/owner/instructor is under no obligation to teach you OW. Just a guess, if PADI does contact him about your complaint, all he need say is you wanted to be taught outside what was on the PADI checklist, thusly you would not be a good fit with his shop, case closed.
So without dipping a toe in the water, you have decided that jacket style bcds are not for you, that you need to have a long hose for the octopus, that you need to learn trim and buoyancy before everybody in a multi person class, and you are already filing complaints against shop owners with PADI.
Perhaps you should pursue finding a private instructor at private rates.