Whenever I catch myself doing this, I try to reframe my concerns from statements (e.g. "the wording here doesn't exclude XYZ scenario...") into questions (e.g. "does anybody know if XYZ is possible with this wording?").

Then what happens is I realize I can go answer that question myself by doing some research, and either I discover my original concern is unwarranted OR I can now state "well they said this but if you look here it's actually XYZ in fact!", which is much more interesting.