He makes a couple good points here, but I don't believe that any Catholic is going to give any weight to anything this man says. He references Matthew 15:7-9, and Ephesians 3:4, which are good versus to start out with. The trouble is you have to interpret these verses and to do that the Catholic want to go to the church to have it done. You can see this vicious circle you tie yourself into once you start the process with them.
“You hypocrites, rightly did Isaiah prophesy of you: ‘This people honors Me with their lips, But their heart is far away from Me. ‘But in vain do they worship Me, Teaching as doctrines the precepts of men.’
