Except there is nothing "magical" about it. You can either design a base around their pathing AI to force them into a line, or you can left them group up in a bunch and fire into that group, and still penetrate more enemies than the AK47 using the same ammunition. That doesn't make the rifles better than machine guns for that usage scenario, but to say the gun is trash because the DPS is trash is a little far-fetched, especially considering Perks. Further, if you're specializing into Perception it would be silly not to max out Demolitions Expert, and I could imagine pumped up explosives combined with Penetrator and a Marksman Rifle being very devastating on a BM horde. You don't have to like the rifles, especially if they don't suit your gameplay style. I don't care for spears. To each their own. Point being, rifles aren't trash just because you don't like them.
It should go without saying I'm not intending any offense, just refuting the idea that this or that is "trash" simply because someone doesn't like it. FWIW, I enjoy your videos, so don't take my comments personally.
Other side of the coin dictates that could mean the AK is overpower for its tier. I don't know if the Hunting Rifle is under powered or the AK is overpowered, but I can see why you feel that in comparison to another tier 2 weapon it feels weak.