Reason for full stack is dream of playing one day in a band. Bedroom for now. When a person plays standing next to a full stack they become better. Being a rock star has a lot to do with image. Full stack, exxaggerate body moves, clothes, stuff like that. Have to pull it all together to pull it off. Can't be a heavy metal rock star with micro cube
I wouldn't die on that hill. These days, you can plug a single pedal or a laptop into a PA and play an entire show where no one in the audience will know any different. Plenty of bands are doing it now. The only people who care about seeing gear at shows are other guitarist and they make a small percentage of an audience. (Except in the first few years when the only people watching your band are the other bands playing that night)
Furthermore, silent stages are becoming more and more prominent these days. Try lugging a single 4x12 cabinet into
any club on Broadway in Nashville only to find you can turn your amp on 1 and only if it's facing the windows behind you with 10 blankets over it. This is a huge reason why modelers are in use as much as they are. For about 15 years I gigged with a 100 watt head/2x12 and never had an issue unless I had to deal with another guitarist cranking up too loud. If the venue has a PA, they pop a mic on your cab and you're good to go, you don't need a TON of stage volume to be heard.
Once people start gigging again, go to some local venues and see how they're doing it. In general, you don't get to play huge stages, where two 4x12's would make sense, right out of the gate. Hell, I'm considering two 1x12's for my next live rig and at the most it'll be two 2x12's which is still overkill in most situations and it's only for my own enjoyment as I'll be running those in stereo while sending FOH a mono signal. (Unless the venue has a stereo PA) .
The reason people are giving you grief is because we've all been through this stuff before. A full stack isn't realistic for volume reasons on most stages you end up playing, never the less a bedroom. While you CAN get great tones relying on the master volume, even in the case of a 4x12, to get the speakers really moving and aiding in your tone, you gotta crank it up a bit. There's great tones to be had a lower volumes without moving the speakers, but those generally don't translate well once you crank the amp up.