Well, speaking for myself, I don’t put scopes on lever guns, so that hasn’t been a problem, and all other rifles which are not bolt guns (Contender, AR-15, falling block) all seem to allow me access in one way or another. I can hit most anything I want to out to 200 yards with the iron sights on a BLR and once I owned a BLR, I never brought the Win94 out of the cabinet again.
The only rifle where it might one day be an issue for me is a M1A.
I think such widgets are just a distraction. It is so easy to sight in a scope either by direct bore sighting, or by starting on paper at 25 yards, that I’m really at a loss why they sell so well. I’d rather put that $140 into a new trigger group or into better glassware... or a chrony... or (insert any one of a zillion other shooting expenditures)
Lots of folks put glass on levers because their eyes are weaker than they were when they were young.
There’s an easy explanation for why use a laser boresighter: I can boresight a rifle in my shop in less that 5 minutes. Not one round of ammo expended. It’s a no-brainer for me.
I agree on the BLR. It’s ten times the firearm than a 94.
I have wondered also about the attraction. I have concluded two things. People think they are saving ammo and many have had a bad experience where they got the scope mounted so poorly that it wouldn’t hit paper at 25 yards. Just MHO.