What site isn't SEO'd these days? Google cannot have a problem with SEO'd sites in general, just bad SEOs.
I cannot think of a reason they would. Webmaster tools shows US what Google already has on our site, what extra information do you give them that would affect rankings? Sure they could see which other sites you own for the purposes of cross-linking but surely they already have filters for that such as whois data? (which would be more reliable too ...)
No, I actually feel that my time has been wasted but I didn't want people to start pulling their info off of GWT because for some that is the only site error knowledge tool they are using.