[1] which is not necessarily true
For some people, if a tool has a single legitimate user, and otherwise haa illegitimate users, then the tool should be allowed.
For others, if the tool is mostly used for illegitimate means, then the tool should be banned.
Where the law lands in this case will be partly based on these values, and the benefits/harms to all parties.
I don't know enough about the case, but I don't think it's as clear cut as a hammer.
The same can be said for gun use (not ownership).
How much something is used for illegal activities should have no baring on whether it is allowed in a free country.