Halemano.. I don't see the point you are trying to convey by using those quotes?
Agencies (that I know of): TDI and PADI (call it 'self-sufficient diver'). Sure there are more, others can add to that list.
At tech level - no such course exists. Some agencies prohibit/discourage it...especially where they have a strongly identified 'team-diving' focus (i.e. GUE/UTD). In other agencies, it's not specifically mentioned either way: although the training is focused on creating a 'self-sufficient' diver.
The recreational solo course curriculum are basically just stuff skimmed from tech courses... redundancy, procedures, drills, mind-set and problem-solving.
The point I AM making, yoda, is that as far as I've heard, there is only one certification for Solo Diver; SDI Solo Diver.
Is a charter boat, like the M/V Spree, allowing divers to solo dive with PADI Self Sufficient Diver certification?
If no Tech Agencies condone solo tech diving, some Tech Agencies prohibit (please explain discouraging solo Tech Agencies?) and no Tech Solo course exists, why is the Solo Diver forum in the Tech Forum, where it encourages significant TOS violation postings by solo tech divers about solo tech dives?
Could someone that knows the "Limits" placed on an SDI Solo Diver for solo dives after certification please post the "Limits" for a diver trained as Solo Diver?
Would an SDI Solo Diver be violating their training by diving solo to 130 feet with a single tank?