People hearing real and fake Leslie's on recordings for years. I doubt ONE of them can tell the difference. They are still more concerned about WHAT the organist plays, and less on what he plays on...
Far too much of this high priced 'clone wars' bull is about marketing and making money for the dealers. Let's face it, some of the top players in the business been happily endorsing and playing these same sims and clones that YOU find utterly unacceptable. But if you made more money of THEM than a real B3/147 combo, bet your life the story would be different!
Thing is, I remember what a REAL Coke, out of a real glass bottle tasted like back when I was younger. Even Coca-Cola doesn't sell the 'real thing' any more, and people are just FINE with drinking what they do make. It quenches the thirst, and after all, isn't that it's JOB?
A LOT of Hollywood scores are performed on 'virtual' orchestras, these days. ANY purist will tell you they don't sound identical to the real thing. But the audience rarely has a clue. As, to be honest, most musicians can't, either (bet YOU can't tell a good orch sim from the real thing). I use a real B3 and 147 in the studio several times a week. But out live, I'm happy with the sim. Sure, it's not identical. But neither is my piano, my Rhodes, my Clav, my strings, my horns, my synths.
But it's close enough for my audience, and it's THEM paying the rent...