What do you think of the prase "don't date a guy if you're not his type?"?

I've heard this phrase a lot and was wondering what you guys thought of it. Also when people say that, do they mean like "not his type" in a way of he doesn't find you physically attractive (1) or for example his ideal type is blondes and you're a brunette but he finds you physically attractive still (2)?

It's stupid
It's true and it's nr1
It's true and it's nr2
It's true but it's not 1 nor 2 (explain in comments pls)
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What do you think of the prase "don't date a guy if you're not his type?"?
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