Just had a quick look, is it his recent change in terms of transubstantiation? I’d listen to what he has to say but scripture, not church history has the final authority for me, so whilst I see his point (theology should be done in the context of the church i.e. church history, but it isn’t infallible particularly as church history moved more towards Rome!) But would definitely argue he’s wrong, wouldn’t stop me listening to him, but then again I’m quite happy to listen to most view points, but I do try and analyse everything through scripture and not just take on others views by osmosis.
Feel free to carry on in my journal (lurking on a monolith, don’t worry if you don’t want to) if you want to talk further, save clogging up J’s.