Nice question if you care/wish to travel down these roads.
Meaning, it’s one of those philosophical, hypothetical, rhetorical ideas…
Meaning, what if someone or a group of someones had pieces of technology or tools from the future during their past days and age?
Meaning too, there has to be pioneers along with those ahead of their time in the times they’re in. Ecclesiastically, there’s a time and age for everything. For every season turn, turn, turn.
The arguments get posed that if Edison didn’t invent the light bulb; if Lindbergh hadn’t crossed the ocean in an airplane, and so forth - Who then would’ve done it?
The answers are always going to be: Somebody else to be sure!
But who, what, when, where, and how…?? Ah, those are defintely inclusive to the sweet mysteries of life. But one need not concern themselves with such things after the facts, eh?
Same thing here then with all the harp players you mentioned and many more.
For whatever it’s worth, we can switch it all around too. If say SBWI and II, the Walters, etc. were here now - then it might be possible that the likes of an SPD, Barry, Ace, JF, and so forth were their pioneers, couldn’t it?!
It’s just as fanciful to think this way, as it is yours, don’tcha think?!
And of course, in this particular time, during our time, except for supposing all the what if’s, we’ll never really know for any absolute certainty, will we?!
These then are my thoughts on the subject…
Keep on Harpin’!