I can't say what he did, didn't do or possibly did incorrectly.Isn't that one of the things I paid the guy in Oregon to do? I mean, if I were charging somebody $250 for a rebuild, I'd probably punctuate the job by finishing it.
I do know he wasn't correct in determining which main jet to use for the pod use. And I'm doubting he touched the jet needle e-clips from what I've read. Actually, the jet needles are more important because you typically spend the most time operating on them. So it sounds like he doesn't have much experience jetting for your situation. That's not saying anything bad about his work or an insult, just that he hasn't jetted them even close.
As for a bench synch being done, I don't know either. All I do know is going way back in my younger days, we started many a bike after a carb rebuild/cleaning and quickly learned we needed to bench synch decently or the bike will just crank and sputter 'til the battery dies. We then learned how important and how much better a bike ran once we learned how to synch with a vacuum tool. And of course, even if he did a bench synch, it may not be done well. If he did it well, then there's some other reason the bike won't start. Regardless, it still needs to be vacuum tool synched because the carbs have to be on the bike to do that.
Without being there to see the bike, there could be lots of reasons the bike won't run. A poor synch is one of them. Incorrect float levels is another (they should be right in the middle of the factory range which is .94/95"). Intake leaks will cause this too. It's best to replace the manifold o-rings when removing the carbs if they've been in service a number of years. The manifolds too, must be checked for good condition.