Whom, exactly?
While I will agree on the lack of need for the uber-Ninja railedreddottedsidesadledcollapsingstocksinglpointslingXRail zombie gun, your thoughts on lighting are around 15 years behind current shotgun philosophy and practice.
Well maintained, "major maker" semis have no deficits in comparison to pumps, using defensive rounds, and at the entry level (i.e.,Moss 930) are arguably consistently more reliable than pumps (870 Express).
I have lived in places (Houston,TX; Wichita, KS) where a bandoleer hanging by the shotty was not out of place, but, as noted, a sidesaddle provides a single reload in a compact, handy package. And, in that context, and along with your thoughts on weight, I like the 3 GunGear product.
Of course, I'm also using the el-cheapo Stoeger M2000, which has a hard-point weight limit, unlike the auto-reg gas M4.