Given the title and the abstract of a yet-to-be-published paper, I asked the PC (co-)chairs of several A/A* conferences whether my paper would be in the scope of the corresponding conferences. Surprisingly, I got an unconditional "yes" answer each time, even for really far fetches for which DBLP showed nothing close in the past years. I suspect that the PC chairs wish to lower the conferences' acceptance rates by welcoming my paper and having the reviewers rejecting it quickly for some formal reasons unrelated to the content (since the content wouldn't be that interesting to the reviewers).
Officially, the scope is formulated very broadly for each of the conferences.
Now, what's the right way to get an objective opinion about whether my paper is in the real scope (vs. an official one)? I'm working completely alone without helpful colleagues to ask.