Yes imo it's harder. It's a constant game of whack-a-mole. Obviously most girls who rebrand don't want their previous name to be known (otherwise what's the point of rebranding).
Now with AI pics, and with seemingly less obviously touring kgirls, it's harder. Also sometimes girls steal other girls fake pics and so when you assume it'd them because pics are the same it can be false.
I still do some recon on bay/LA girls but I'll admit that I haven't looked at many orgs that are out of state.
With prices going up it's less and less fellow mongers who are willing to toftt and bite the bullet on an unknown commodity.
Going back to rebrands I don't think it's just me either, the other board has a subforum about rebrands in LA. It used to be live in there but now its not getting as much traction. Also that board has probably the most outright shills it ever had since like covid, right now.
But I digress.
By the way, I can't ever take full credit for many rebrand I've pointed out. Some were pointed out to me by another monger, some I saw in a private group, etc etc.
I always attempted to share that info because it could help someone who's desperately searching for datapoints.