A gun can be used as a hobby, self defense, hunting, and other things

So can this machine. All of these are meaningless, made up hobbies to justify gun ownership.

You can just as well make up ridiculous hobbies like that for that machine. Let's make a sport, call it "tag removing" and it's about who can remove the most tags in the shortest amount of time. There you have it. Just as amazing as having shooting as a hobby. Less dangerous, too.

while the tool I am speaking of has the sole purpose of removing tags from merchandise illegally if not used by the store owner.

Yeah, and once again, guns have the sole purpose of shooting people if not used by hunters.

Tor is used as an alternate form of internet browsing to ensure privacy, unlike the tool I am speaking of TOR has many purposes that are not illegal.

Yeah, but why would you need privacy if you are doing nothing illegal?

See where this is going?

Yeah. Exactly where I said it would. You can make meaningless excuses for banning all these things. The same way you can give reasons as of why it should be legal for all these things.

I talked about guns and TOR because they can actually be used to harm people. Terrorists plotting attacks and child pornography being distributed with TOR and people getting shot with guns. A tag remover isn't nearly potentially as bad for society.

So, ultimately: Nobody should be restricted to have whatever tools he/she wants. You ban the actually harmful activity and persecute people for that. Not for owning the tools to potentially engage in said activity.