My issue with USF snares is they aren't on LT or CPT and you have to vet your Riflemen (which is not a very quick process with that unit) before they get them. That's why it feels like Axis has a big advantage there. The Cav Riflemen satchel is admittedly the best or tied for best snare in the game but thats only one unit in one doctrine.
I think the big problem here is the assumption on everyone's part that everyone has the same experience at different points on the ladder.
At very high ELO Satchel Charges are weak: at 5 range they're very difficult to trigger because everyone's so good at maintaining optimal range with vehicles.
Similarly, unit preservation is very good so USF snares being behind veterancy isn't a big deal.
However, if you're playing at a level where frequent squad wipes are common, I can see how that veterancy lock would be a real problem.