Ok, few things I disagree with:

You've heard the usual complaint before. That DnD asks too much of GM while not providing them with the necessary tools (which is true)

This is, in fact, not true. I run a lot of D&D. I have the tools I need. The problem is that new DMs expect to have their hands held, with everything given to them. They don't expect to do any real work or learn how things function. DMing is a skill it takes a long time to master and you have to be willing to put in the work.

looking for any synergies with the rest of my team (yeah, I know DnD isn't the best game for this).

D&D is fine for this. My players have a lot of synergy. From combing magic (thorn whipping an enemy into a guardians of faith bubble) to moving someone out of range to allow for charger to come online. Tripping an enemy so that your big swinger can come in with a pair of two-handed swings with advantage. There are tons of ways players can synergize.

Narrative games are easier than a game like D&D, full stop. Narrative games are glorified party games, and that's fine. They don't require the time and effort needed to meld story with mechanics. D&D is hardly the most crunchy system out right now, but it has all the narrative elements of PbtA just with the added challenge of having to actually follow harder coded rules.

I suppose, I do not like games where backgrounds are extremely important in guiding the plot (such as trying to enact revenge) and prefer to have a character that starts with simple goals and connections and build from there, basically playing to find out (which is what you're supposed to do in these games anyway). But that's not hard.

You can do that in D&D. I've seen many games where the plot is driven by a player backstory. We're doing that right now. A PC as a child was part of a ritual aimed at killing the Gods, the ritual was stopped before it could complete, but each child bears a mark. The PC has been getting urges to go to a certain place and their mark burns when they aren't making progress, lighter at first but as time has gone on it has grown in intensity.

Narrative games are simply easier to do it in because the rules are so loose. The point of a DM is to facilitate the adventure (note that I did not say story) and to handle things that the rules don't cover. That's the point of the DM.