You are free to call it what you wish, of course.
The point is that for any reasonably clear proposition I can take a position, either I believe, I disbelieve or I do not have enough grounds for either of those positions.
For unclear propositions I could not be said to have a belief, nor really could anyone else.
Any reasonably clear proposition surrounding god or Gods that I have heard so far I have found implausible.
I also note that the very best minds of humanity have been trying to make a case for a God for millenia and we do not have one yet, so I find it implausible that a good argument is going to be forthcoming about any such entity.
If that is what you call "atheism", then yes, I suppose I could be described as such.
I don't define myself that way.