No, it’s absolutely not the same thing. How can you compare something that harms no-one, to something that should clearly be illegal due to likelihood of death and maiming?
The original argument is essentially "if this action is so easy then how can you make it illegal?" which is not a very good argument as pointed out. Your argument is about the morality of this action which is quite different.
Because they are making a disingenuous and foolish argument.