Shouldn't make any difference as Honda use a choke not an enrichener
When you block the intake, it's sucking fuel through the pilot circuit
If pilot jet is too small, it's too small (but that's a factory/EPA issue)
Cracking the throttle usually makes any Honda (with carbs) hard to start
Agree completely about the choke plate. Filters upstream from that are irrelevant. You do have to check the choke plates a closing fully.
However, with the throttle valve held open, fuel is also delivered via the main/ throttle valve orifices as well as the pilot circuit.
Not saying you hold it wide open 'til it starts. But, a couple of cranking cycles with the throttle held open will suck more fuel into the intake runners (air being blocked by the choke plates). It's possible to make it way over rich (flooding) the bike this way. But then, choke off and wide open throttle should clear that up in a couple of revolutions of the crank.
Cheers,