I don't think holding the plane back by the tail is a problem for the vast majority of planes.

On those wrecks where the tail fails, flutter is a common factor, as is too much stress from violent acrobatics, or other issues. We really aren't talking about a lot of force here. After all, it's common practice to hang airplanes on the wall by the tail. If the tail can support that, then it should also be fine during a run up.

If your tail can't handle a run up, I'm guessing it will probibly fail in flight anyway, even if you never even touch it on the ground. Yes, the forces are different, but fore-aft forces against the chord of the stab (often 4+ inches) is just not a big deal compared to up-down forces against thickness of the stab, often a flat plate about 1/4" thick or so.

That's not to say I have anything against using the front of the wing, that's fine too.