No. I have run 33s and an 1.25" body lift with as little as 2" and currently with 4" of spring. Early on with my Old Man Emu N66/N67 shocks, I had maybe 3.5" of up travel, 5.25" down. I ran them briefly with the current Currie 4" springs, finally resulting in about 6.5" of up and 2.25" down. That was when I really began to understand and appreciate up travel; even though the shock travels were out of balance. The bump stop extension from that first version of the build never changed despite the increases in lift height simply because the shocks and tire size never changed.
My point in not mentioning lift height is that spring lift has no direct bearing on the amount of required bump stop extension. Any relationship is coincidental. Lift height is what provides up travel until the bump stops stop it.
Currently, with relocated shock mounts and (effectively) the same bump stop extensions and still on 33s, I have 6.5" up, 4" down in the front and 7" up, 5" down in the rear. The Jeep has never ridden as well as it does now.