If you are an "avid buyer" and buy at several dozen stores at once, then it is quite possible. Already several times the special services hacked shadow sites and collected information for months (or even years).
Then, in addition to the site creators, the entire forum team was deanonized, and at the same time the most active "users", who it is quite possible to become ... And after such a deanon, little will help, only if the islands are somewhere in the Pacific Ocean.
The main thing is not to stand out! No matter how ridiculous it may sound :)
In the Tor network, as a rule, something is paid in bitcoins, they cannot be tracked, and therefore no harassment can threaten you, even if you use it in the future.