I can only answer for myself. I have about 200 confirmed matches from others awaiting my confirmation. However I can not confirm most of them since the data in the smart matches are not conclusive. I.E I have a wife and huspand with children and the matching tree supose to have the wife, sibblings and her parents whom I know nothing about. Also dates and places are missing so how can I confirm such a match.
In turn I have confirmed 20000 matches awaiting others confirmation. So sometimes I wonder why I bother to confirm at all as it is now.
I would like an option to mark smart matches as Unsure so I know I have handled the match but need more information and in that way also be able to filter out the once that are new to me.
Count yourself lucky, I've got 3,908 unconfirmed. That's with filtering repeated trees, basic trees, and trees not updated since 2011. Many people have gotten frustrated with the whole thing and don't even participate in smart matches anymore. Some don't worry about the matches, some don't see them. Then some use smart matches on Family Tree Builder and are not aware that they also have matches on the web site.
I'm one of the ones who became so frustrated with the "stupid matches" that I turned them off. The "development" team certainly doesn't develop ANYTHING. They seem to be concentrating on tweaking things no-one wants and ignoring the problems that people have been complaining about for years.
I doubt very much I will be renewing my premium membership. And they can't auto-renew my credit card because I used the Discover one-time online use number and that number will be rejected if they try to put it through