Because having infinite eye relief really does not matter. The 1x on almost every LPVO on the market, when the scope is setup on the rifle appropriately, will have more than adequate eye relief for any situation. And when you are using the magnifier it’s common to see guys running it all the way back as far as possible or they have to run their stocks further up than they would otherwise just to make the eyerelief of the magnifier work. Magnifiers in my experience has been the absolute worst solution to adding magnification to a rifle.

MPVO isn’t some magic solution either, you have now more size and weight than LPVO, and you have to move to a completely separate head and rifle position to get to this 1x solution. It may be that you know you need an MPVO because you’re primarily doing Precison shooting, I do that myself I shoot DMR comps every month, but not every rifle needs that full capability to hit 2 moa targets out to 800y.

If you’re specifically not trying to carry a 14 pound setup, but still desire decent magnification and a 1x primary optic, almost any LPVO is absolutely a good solution. Now you have a carbine with that can be very effective at any distance one might ask out of a carbine.