IMO, not everyone needs a solo-cert and one may not get much out of the course, but that's not something I'd say too publicly.
(I've been solo-diving without a cert for a long time ... although I was perhaps more lucky early on)
When you are diving solo, you need to be extra mindful of redundancy. An instructor could theoretically depend on their students to a limited extent. For example, air-sharing, or having one call 911. However, a competent instructor, with redundant equipment (air, cutting, etc) should theoretically be more qualified. Probably the same with a rescue-cert.
That said, solo (or self-reliant) diving is a different mindset. Are you equipped and thinking through what you would do in an emergency? Are you avoiding scenarios where you might be unable to self-rescue?
My 19cf pony is less than an arms length away and far more predictable than a student.
I'm not an instructor, but these days I have redundant air on EVERY dive. And certainly, if I were to instruct, I would do the same, and probably slung so I could hand it off if absolutely needed.
I really only want this cert (I guess I should say "card") for warm water land based or liveaboards where they might require it for me to dive solo.
As someone without the card, I'd be "screwed" in that situation. Even though I'm more than equipped, and have a few hundred solo-dives. If you're spending thousands of dollars on vacations, it's probably better to just spend the money on the "stupid course" even if you don't really need it.
What is the typical minimum amount of total dives required to receive a Solo or Self Reliant Diver Cert card?
I believe 100 is the standard, though there may be deviations.
Also, I can be drunk, stoned, 16 years old with no ID or training and go to a flipp'n gas station and buy all the propane I want and either breath it or blow myself up if I want to and no one cares or feels the need to regulate that.
Now that right there is a bonafide RANT!!!
I agree, and may be a bit of an anarchist myself. But there's the reality of the 1000s of men with guns and handcuffs who demand I pay taxes and follow absurd rules. Soon, we may not even be able to have gas-stoves!?!
In the context of diving, once you start dealing with dive-shops, dive-boats, etc you'll increasingly run into by-the-book types who demand you follow certain rules no matter how pointless they are. For example, those stupid VIP stickers are a scam. But good luck buying fills without one.