I also don't understand messing with magnification hunting. I miss judged a squirrels position on a limb this week by not turning up the magnification but usually taking the time to change it would cost me the shot. I almost always use 6X. More and I'm too slow to acquire the shot. Lower and I worry about placement. But regardless of what magnification you like if you don't mess with it you should know the value of your reticle marks. I find SFP scopes with a reticle I can see a lot more useful than a FFP scope with an invisible reticle at the magnification I want to use.
If I were tree squirrel hunting, having the typical PBR shots 15-20 yards up in a tree, I could be plenty satisfied with a modern SFP at whatever magnification I felt provided the best combination of FOV and magnification. I think most here would too. You don't have to hold off or over. Just aim and shoot.
It's not until you get farther that more advanced reticles and features start to make a difference.
Most FFP scopes, especially higher magnification ones, have "thin reticles', and these are mostly meant for mid to high magnification. It's a trade off for having correct holds where the scope will be used most often. Nope these are not great on low magnification.
Now lets take LPVO FFP scopes in 1-?x24, which have thicker reticles designed to be useful even at 1x. Now you've got a FFP that is more versatile than many SFP scopes but can be used up close. Most people don't use 1x, I don't that's for sure, mine is on my AR for QCB, God forbid I should need it. What I don't like about many of these is they don't have a side focus and the IQ gets more wonky up close as the image increases. But at 6x these have retained much of the IQ. Thusly I sold all but one.
Take that a step further and now consider the aforementioned Helos G2 2-12. It also has a thick reticle which you can see at 2x and pretty much every other attribute one could want for a wide array of shooting scenarios.
So no I'm not going to use my FFP 5-25's for tree squirrel hunting for a few reasons, no plans for say using a 3-9 SFP with duplex because I've been there before, nor a FFP LPVO although it's getting closer to what I want(well maybe would use my March shorty DFP with side focus), instead I'd much rather use that 2-12 because it'll excel in any situtation I would find myself in. If I see a squirrel 120 yards away, no problem, if I want to head shoot one at 10Y, no problem, one in a dark shaded area then turn on illume, no problem.
Edit - Athlon Helos G2 2-12x42 DMR = Versatility........, holdover or holdoff, dial elevation or windage, combos of these, short range, long range, ELR, speed shooting on steel, paper shooting, plinking, hunting. Almost a do all scope, at least if there ever was one.