I must admit (and this isn't aimed at anybody in particular) I do find some attitudes to weight a bit puzzling. My previous cab setup must have weighed in at somewhere around 50 Kg, I'd guess.
When I swapped it for my current BF 1x15 Compact, it was truly a game-changer. A single cab solution, at ~11.5 Kg. Yet the thought of "lugging" an amp of the same weight is a no-no, despite an amp being a far easier carry than any cab. IMO.
Each to his own, eh ?