I agree with this 100%. But, as with many things, PADI either ignored or didn't care about the unintended consequences....i.e., their Self-Reliant card, which is equal to or better than the SDI Solo card, not being accepted because it does not explicitly say Solo. All they have to do is announce in the Training Bulletin that, henceforth, and retroactively, the Self-Reliant Diver certification is renamed as the Self-Reliant and Solo Diver certification. Then it is even better than the Solo-only card from SDI.I suspect 2 factors were in play....
1.) PADI had a rep. for historically being anti-solo.
2.) SDI, an agency many hadn't heard of or had paid little attention to, came out with a solo diver course that found demand. More divers started taking notice of SDI, and taking that course. While they were there, they got introduced to an alternative to PADI for a range of other courses.
It's not unlike if Wal-mart discovered they didn't carry something a lot of customers wanted, but found at Target...and some took a liking to Target.
If PADI didn't want to 'eat crow' or lose more business to SDI, options were limited. Coming up with 'self-reliant diver' is surprisingly inventive under the circumstances.