I’ll agree with this, for the most part.
That’s why I think if one were to choose a “deadlift-centric” program, you’d need squats still as an accessory lift and I’d probably recommend front squat, high bar, SSB, or belt squats all before low bar.
Also...
Putting snatch grip and sumo into the DL rotation will increase quad recruitment some. Trap bar helps with quad recruitment also, simply because it allows the weight of the entire system to be centered better and allow the quads to help with knee extension.
If one were to go to a DL heavy program, I’d probably focus more on conventional, sumo, trap bar, and snatch grip from the floor before going into deficits or block pulls or even RDLs. I think those other variants are because the squat is primary for lower body and you’ve gotta make up for DL weaknesses without crushing recovery.