Possible yes, probable not likely. The moment you're issued a certificate your domain will be shown in the Certificate Transparency logs which are constantly monitored from anyone who wants to find new sites.
....Yet another vector through which "security experts" has caused a waterbed problem. Let's secure the Internet, oh no! We made a centralized list of operating domains for hostile actors to guide attacks with!
The point is that you can't escape side-channel applications of security metadata being weaponized the more you try to force ubiquity of "security" everywhere. As long as there are motivated, profit seeking attackers, you have to take into account the toxic nature of metadata. This is another example of "A System Is What It Does" proving the pointlessness of "POSIWID". Intent doesn't matter. Certificate transparency was intended to clue us into bad cert issuing, but it is also a list of potential targets where AI crawlers can be directed to scrape new data. Intent doesn't change what it is. Cert transparency is certainly transparency + a "training data might end end up here" list.