Hello!
This statement would be false. Wikipedia defines a fallacy as, “A fallacy is the use of invalid or otherwise faulty reasoning, or "wrong moves" in the construction of an argument. A fallacious argument may be deceptive by appearing to be better than it really is.”
In other words, it is something wrong. It is something that is deceiving, and not a proper way to make an argument. Therefore, it is considered UNethical, and oftentimes it is INeffective when proven to be a fallacy. Therefore, this statement should be false.
Hope this helped! Comment if you have questions!