Discuss the issues all you want, but do not make it personal.
And because this is an ecumenical thread, also do not be antagonistic.
Will his post be removed? If I respond to the post that you’ve identified as antagonistic, will my response be removed? What is the procedure? Should we ask the poster to rephrase things in an un-antagonistic manner? That seems like the right thing to do, if you’re willing. Then the antagonistic post could be knocked out and we could all move on.