It's not a bad idea to keep tabs on what these assholes are up to. This little shit is out there everyday trying to convert people to his cause. Making him look like an idiot on social media might be a vaccination of sorts to keep other young people from falling into his trap.
Because as important as it is to deplatform these idiots, we also need to know what they're doing. They're still going to be out there actively radicalizing people and you can't fight this shit if you don't know it exists.