Atheist imperialism is worse. And it's far more fatal to human beings, by orders of magnitude, actually.
But in any case, it would be just nonsense, then, to think of the Atheist use of their construct "religion" as being tolerant, open-minded, multicultural, permissive, liberal, etc. It's actually imperious, self-satisfied and dismissive -- and also completely tone-deaf to any differences between so-called "religions." So liberal Atheism's veneer of "tolerance" and "understanding" is very thin; and underneath it is not much but an uninformed and unjustified smugness.
About "diversity, inclusion and equity," Atheism actually is not living out what it claims.