Hello! Imagine, I have used your tool for commercial. How do you found me?
Theoretical question
You forgot to add "asking for a friend" to sound less suspicious :D
Don't worry I couldn't care less if people pirate this software and I'll make no attempt hunting you down if you do.
Ofc I prefer to get paid, but truth is preventing piracy just doesn't worth the time and effort for a private individual like me.
So do whatever you feel is right. I will never know. But you will always live in fear that maybe I lied.