I haven't even watched the whole video yet (at work), but the premise is correct, and something I bring up fairly often especially when herbs complain about modelers not sounding like an amp in the room.
Your in the room tone doesn't not matter to anyone, except yourself. It does matter in the sense that you standing in front of the amplifier may be more or less inspires to play, write, create depending on what you are hearing. But, the moment you decide that you objectively have "good tone", you are making a colossal mistake because that sounds is going to get filtered and fucked with at multiple stages before it touches most other human ears. If you do not regularly dial in your tones through those common filters of preamp, mic, and applicable sound system/playback, then essentially you have never actually truly heard your tone in the way that you are presenting to other people. Your in the room tone is meaningless to anybody else, and most of us often dial in obnoxious midrange, or bloated lows, or ear piercings highs because we are trying to imitate other tones, which we've only heard through those same filters.
To bring up modelers again, guys who regularly dial in a modeler with some sort of "full range" setup are actually getting a much more accurate image of what their end tone is, than the purist dialing in a sound standing in front of a guitar cabinet. There are of course discrepancies in playback systems to be considered, but that filtering is much less drastic. I know that comment might stir some of the geezers up.
Humans are all kinds of fucked up, in their hearing and their memory, not to mention how drastically different something can sound when placed in a new room/venue/whatever. Without decently recorded clips (not a goddamn phone), I find any 'bedroom players' opinions on a piece of gear to be nearly worthless, subjective gibberish that is more about the experience of playing more than it is about the tone. It's great that they are inspired to play in their basements, but that's not necessarily going to translate to someone who actually creates music for other people.