Seemed quite a sensible suggestion to me. Not coat-trailing or anything liek that, no rerason to have been put in pseudonymously really. It's what tends to happen anyway without setting out to do it. You find yourself on the same side as someone you've been having a battle with. And vice versa.
And that doesn't just happen with music threads - it happens with all kinds of disputes. For example, just because you're in agreement with someone about some politician being a creep, that doesn't mean you'll agree about the merits of Israeli crowd control methods, for example. Or the rights and wrongs and facts of history. Not to mention Vegemite and so forth. Or split infinitives...Let alone "what is folk?" (Oh no! ...)