My general observation: each rim-tire pairing is unique. Some are harmonious and the tire mounts easily, but not too easily to be loose. Others are monstrous and gorilla hands and about five levers are needed to get the beads onto the rim, without pinching a hole in the tube or snapping levers. I am hopeless to predict this relationship beforehand. And have stories.

Wire beads stretch a bit with time and become easier to dismount/mount. Foldable beads don't appreciably stretch and once difficult/always difficult. This sounds prosaic until you're fixing a flat in 108 degrees or pouring rain.

In sum: depends!