I have missed the last couple local association meetings, but nowhere have I heard or seen that the restart should always be an IFK. That is ludicrous. Stopping the game for any contact might be a proper response to a perceived safety issue, but that shouldn't dictate the restart.
What I think is causing some confusion is that I have heard some waffling about is whether we should stop the game if there as any sort of unintentional light contact, including a 'brush' of the ball against the hair. What is clear to me is that the game is stopped when there is an intentional header or when there is a chance that a player might have been injured from an inadvertent ball contacting the head (as we are coming to understand what constitutes this sort of an injury). I think that some officials are taking the position that any contact to the head is a risk of injury. I'm not there yet, but I will stop the game if the contact was at all direct and/or hard, regardless of intent. For me, restarts are as appropriate, IFK or dropped ball depending upon my perception of the intent.
Anyone suggesting that an unintentional touch of the ball to the head should be an IFK is wrong based upon everything I've seen from authoritative sources on this subject, both verbally and in writing. Until I see some official directive from a proper authority that says that unintentional heading is to have an IFK restart, I'd be difficult to convince. That being said, if a competition put it in writing in the rules and made that policy public, I'd print out the rules for the competition and make sure both teams were aware of it during the pre-game, which is what I hope happened in the tournament(s) being discussed. Actually, I'd still have a lot of trouble with that. It just doesn't make any sense that we would mandate an IFK restart in all situations.
A dropped ball is a time honored practice to restart a match when play has been stopped due to injury, I think some people have misunderstood some conversations or other instruction.