I think in this case, anyone that shares publicly especially in a way to teach others needs to do their due diligence and if for some reason they find that what they shared isn't the right thing it's okay to take feedback and corrections and update what they already shared.
For further actions, you may consider blocking this person and/or reporting abuse
I think in this case, anyone that shares publicly especially in a way to teach others needs to do their due diligence and if for some reason they find that what they shared isn't the right thing it's okay to take feedback and corrections and update what they already shared.