With all due respect, Marie, you only dive Great Lakes wrecks. Your expectations are different from someone who dives in other environments. Go dive in the tropics and you'll typically get a longer and more detailed briefing, a DM who will act as a guide, and it might even be the custom to assemble your gear on the boat.
As for buddy checks, PADI (and probably other agencies) hammer them into new divers. So if that procedure is skipped on a charter dive, it might seem to the new diver that they are "doing it wrong." Because, at least according to the way it's taught, they kinda are. No need to then scold someone asking serious and valid questions and claiming that they must want their hand held.
That's not a fair representation of what Marie said. I don't thing she advocated skipping any procedure, safe diving practice, or ignoring your buddy check.
The buddy check is not the boats responsibility, its the divers.
If the diver is not happy with the buddy check, its for them to say so. If it's too quick, skips something or has not been done, the diver should speak up. The buddy check is between the two divers making up the buddy pair. It is a component part of their dive plan, but specifically the divers responsibility.
The site briefing is the responsibility of the boat. If a diver is not happy with the site briefing, or requires more information, again the diver should say so.
The issue is 'guided dives', if the boat is providing that service (or curse), then the guide does need to ensure that all the divers are aware of the dive plan and related dive discipline. But again, the buddy check is not the guides responsibility, that is still the responsibility of the buddy pair. Its also arguable if the guide has any responsibility for the air management, however, a prudent guide would keep an eye on gas consumption rates, and particularly on the lesser experienced.
I still occasionally have a dive guide, often, they know where the interesting life is for me as a photographer. It can be a great benefit for site location. However, I manage my dive, gas, time and decompression. I will also abort the dive if I am not happy or ask for the plan to change if I don't thing its suitable, especially if its not 'safe''.
There is a difference between a diver under tuition, and a qualified diver.
The guide does have a responsibility if the diver is not experienced enough for a site, but part of that responsibility is also the divers.
Gareth