Yea, I get where they are coming from, definitely.
But when you see the hoops big name acts have to jump through with their tube amp rigs you have to wonder how can that all be sustained:
AC/DC rig rundown:
Start at 15:50; the tech talks about how they went through 62 heads at rehearsals, have a dozen spares for the tour (in addition to the several they are running), a full time amp tech (who works on them everyday), and how each amp is different (modded, some not, etc.) and all of that after he shows the massive power supply/conditioner that they absolutely need to employ to keep the voltages/AC frequency stable (and optimum for tone). Sure, AC/DC can afford to do that, but they are an exception as most of us cannot expect support at that level.
Sure, big rigs look and sound amazing, but look at the money, time, and effort needed to keep a huge tube amp rig running (or even a small/moderate rig). Dave Friedman and Steven Fryette amps are likely much more stable and consistent vs old Marshalls, bias easier, etc. but man, tube amps generally require so much maintenance, are harder to move, expensive to re-tube, limited in versatility (not all), are subject to the wide variations of tubes/quality, are susceptible to AC voltage whims and effect on tone that modelers just make way too much sense for mortals like me.
Even if modelers may not feel/look exactly like a tube rig the advantages are overwhelming (and the feel/tone of the FAS offerings are truly amazing to play, and will get better). If I was Angus in his position I'd likely have a giant tube rig, but....