Heh - no, true... because they're aware of the fragility of egos. Or if they aren't, they soon would be made aware
Maybe it's because I come from the indie/rock/alternative side of the tracks, but I've interpreted a 'band' as an artistic collaboration between all members [in variable proportions, obviously/famously].
And maybe I'm being presumptuous, but it's this collaborative definition that, I think, is what OP/Beato/Richard Osman et al have all been all been implying when they refer to a 'band'. Beck wasn't a band. CMat isn't a band. Idles ARE a band. At least, that's how I'm interpreting it.
Just don't ask me what The Fall were