But you don’t have to like an E-ticket. It is sorta subjective, but honestly it is scale and immersiveness that matter. I think MFSR has both. Certainly as much as Mission: Space, another E, or just about all of Universal’s Es.I'm the opposite -- I can't imagine anyone thinking it is. Being inside the Millenium Falcon is great. The actual ride experience is pretty bad -- you can have more fun/a better experience playing a 25 year old Star Wars PC game than you get on SR.
As someone who actually plays video games regularly, though (or at least I used to; not as much now), I think it would be very difficult for me to have any ride that's essentially a video game be an E ticket. They're basically guaranteed to be significantly worse in essentially every way than what you can play at home on your couch. I feel similarly about rides that take place entirely or almost entirely in front of a screen in general, though. It's almost impossible for that to provide the ride experience necessary to be an E ticket.
Talking about E tickets ends up being subjective at this point, though. Something could invariably be an E ticket and still be a bad ride, so I guess it doesn't really matter if Smuggler's Run is an E-ticket or not. It's still a mediocre to bad ride.
I don‘t particularly love the Tiki Room. In the ‘70s, it was an E. I hate CBJ. It was an E in 1972.