The cantrips from SCAG are very powerful considering that they, at face value, can be used by any '1-attack' warrior to gain a respectable damage increase. And ontop of that the modifying factors mentioned above come into play. We all know that booming blade and green-flame blade are ported over from 4E's Swordmage. I think they were inserted into 5E as an addendum to the bladesinger, which is a little strange since the eldritch knight seems more like the swordmage of old, than the bladesinger does.
The new rule changes ties the cantrips even more to bladesingers, strengthening that design choice.
It is what it is, I suppose. Both cantrips still play a role for all 'weaker' melee characters (such as a cleric, wanting to have a decent melee attack) that looks to to add to their melee output through the Magic Initiate feat.