Curiously, there is a myth out there that cooking the honey transforms some of what are fermentabe sugars into non fermentable. Which is to say that folk who cook their honey for bochets suggest that they cannot get their mead to ferment brut dry. Personally, I have not found that cooking my honey has such an effect but , spagnot, you seem to suggest quite the opposite: that cooking your honey makes it more fermentable. I think all that boiling does is transform the flavors by cooking out the more volatile aromatics and flavor molecules which presumably is one reason for buying and using the honey you want to ferment and by creating more caramelized flavors which you can do with less expensive non varietal honeys. Of course , all bets are off if the honey you have was improperly filtered and prepared. Most honey nowadays, at least in the USA, even if raw, does not need to be boiled.