In Chess, it seems that Everyone is an Expert!
Why not? If you believe you have (or do in fact) standing or enjoy domain… like would a parent, a teacher, a coach, an official, a patron, a sponsor, a player, etc.
No need for elaboration here. I think the only danger is when you assume and/or do not properly research, or worst, have an agenda to promote.
It’s a free world (I hope?) and in the end the “market” decides whether you or I (or whatever them is!) can agree or not… and really if you think about it, all choices are equally valid.