Good idea, I recoiled from having to register there, but I can create a burner EMAIL for the spam I will generate.
WND, Takimag, AT, Breitbart, NRO, gateway pundit, dilbertblog and many other sites I can’t recall right now all use Disqus to post comments and I’ve never gotten any kind of spam from them.
Your Disqus account is good over any site that uses it so there’s no need for multiple accounts.