If you want to be a member of many of these platforms, and you're a target of that offensive material, you do have to tolerate it. The racists use the platforms

If you want to be a member of many of these platforms, and you're a target of that offensive material, you do have to tolerate it. The racists use the platforms tools to find you and hurl it at you, and then the platform gives you little to no recourse to even ignore them outside of not using the platform. Your advice only works when you're not the target - when you just need to walk past and avert your eyes from what's being said to someone else.