Some more information came from said drummer separately this morning. Love the bloke dearly, he’s 40 next year - and like me, he’s been close but never “made it”.
I think he feels this is the last chance.
The singers attitude can be off at times - he’s Done more the covers/pub band stuff and he doesn’t really seem to empathise with the “artistry”... he’s a bit more Alpha Male than the rest of us.
Guitarist is lovely, but doesn’t need to strike it lucky as he’s a wealthy chap (a barrister) and I think, while he has a passion for music, he’s not overtly ambitious with it. But he is good at what he does.