My experience with Pride is that there is an emphasis on inclusion, especially as the definition of "Queer" and "Pan Sexual" broadens, so I see no misappropriation. If you are still not 100% sure, "This Straight, Kinky Guy Supports LGBT the Community" stance is pretty safe.

There is a "Kink Pride" of sorts, The Folsom Street Fair, and it is glorious.
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I've broken all my toys. Would you like to be broken?