That’s a fair response. But it seems to support more that each clowns personality is of stronger significance than the anemone. Unless I’m misunderstanding.
For a similarly concrete example on why I think it doesn’t matter: I have 2 pairs of clowns, hosting bta anemones in separate tanks. None of mine are aggressive. No matter what I do, they don’t bite.
That said, I’ve had many clowns at my old LFS, that with or without anemones, would bite every time and within 1-5 seconds (some of them, always under 2 seconds). I’d also have many that wouldn’t ever. I probably saw more aggressive ones without anemones than with. But that could have been biased if we were subconsciously placing aggressive ones (staying within species lines) into non-anemone tanks.
And in my experience, clowns will host anything: anemones, coral, a rock, a piece of plastic, a wall, a powerhead, anything.
but once again, this is all anecdotal evidence. Nothing strong enough to be conclusive.