Agreed.
Here’s where we disagree. Different people will have different opinions about where the line lies, but the line can’t lie in multiple places at once. By saying your opinion is that the line lies in a certain place, you are implicitly calling the opinions of those who think the line lies elsewhere wrong in that assessment.
Now, personally, I don’t think it’s reasonable to say that there is no line. But, I try to err on the side of being more inclusive than exclusive with where I draw the line. When I think someone draws the line in an unduly exclusive position, I’m going to call out that as exclusive. Because exclusivity is something I think the hobby needs a whole lot less of.
So I think
@Oofta is being exclusive. Saying “it’s just an opinion, bro” doesn’t absolve it of that. Maybe Oofta is comfortable with being somewhat exclusive with what they consider to be D&D, and they have the right to be. But I also have the right to point out that it’s exclusive.