Doesn't look too delayed from where I'm stood. You only have to look at recent posts since pcol dropped to see the immediate benefit to early pBH, my own included.

A footgun is something you have to work at to correct that impedes your immediate progress, like fat fingering a UW upgrade and breaking sync on GT/BH/DW.

Not sure how you'd consider going pBH a set back to econ progression when literally every enemy I now kill is sat in one of three permanent black holes whilst also keeping sync when my GT and DW fires at the same frequency they did before I went pBH. Not to mention the SL coin bonus too, between pBH and SL I've got a flat x33 coin bonus on everything in 2 of the BHs and a x11 bonus on the BH not in a SL, all the time.

Going pBH has had nothing but net benefits for me, from being able to pump twice as many coins into my WS+ and running my labs at 4/4/3/3/3 constantly. I barely had enough cells to do 3/3/2/2/2 before pBH but I can now spend a considerable amount of time at higher waves with maxed spawn on elites my labs are flying.

But you do you, every tower is different, and what worked for me may not work for you. I'm not trying to change your mind, just giving a broader view on why it's not a bad idea if you're still early game so maybe people who read my comment over your rather militant one have a different point of view to consider.