At least on the PC Version, if you start a new run after finishing the game, all spiderwebs will already be removed. You still need bow for the buttons in the forest, but you save time by not waiting for the webs to burn. Also you can get Dash before bow, which probably saves a few seconds as well.

Since this requires finishing the game beforehand, this should probably not be allowed.

Opinions?

I think I can allow that, I'll add it to guides or something soon

Just to prevent confusion: I'd vote to ban this glitch, not allow it.

This does require runners to restart the game between runs, but I'd argue that allowing this would lead to a weird situation, where you'd have to play through the game once everytime you restart, just to start an actual run.