What I keep coming back to is that the bonuses in the book are for Player Characters, and that those are meant to be exceptional people anyways. So being more exceptional by being a strong elf doesn't really mean anything.
I mean, I spent a good week debating with someone whose position was that the +2 mod was meant to shift the distribution curve of the 3d6 rolled stats, giving a slightly higher average to those races, which was picked before the person rolled their stats in order.
Well, that isn't how DnD is generally played anymore, so since we have options to pick and choose our numbers instead of 3d6 in order, why don't we extend that to the racial ASI's? It will open up more concepts and potential characters, removing a barrier from people by expressing that it really is more important what someone has done than how they were born.