It's not in every authentication thread, and as you may know if you've followed this one, Vlad and Megs are looking at the authentication issue across the forum with an eye to making changes, rather than doing things piecemeal. People have been great with offering suggestions and opinions here for them to consider.
And just a personal note: as someone who authenticates,
I try to always include in my posts phrasing to the effect of "in my opinion" ... because regardless of disclaimers, it bears repeating. I don't always do it, but I do try to. And as has been mentioned a lot here too people rarely even read the first post in a thread, another issue being looked at.
Frankly, even a paid professional or appraiser is just rendering their opinion. I've had appraisals done by reputable firms on the same piece of fine jewelry to have them come back with wildly disparate assessments.
Opinions ... everyone's got one!