Do I need to boil flax seed egg substitute? Most recipes I've seen for flax “eggs” simply say to mix 1 tbsp of ground flax seed with 3 tbsp of water and chill, but I read a recipe (I think it was for vegan cookies) that said to boil the mixture before chilling.

Does this improve the chemistry of the egg substitute in any way?
Heating the water will speed up absorption. The question is by how much and if it’s worth the extra time?
I have made many recipes with flax as an egg substitute. I don’t ever recall boiling the water. I can’t think of any of them that didn’t turn out as intended. 
Do you have any links for the recipes that recommend this?