No, I constrain protestants to their own punctilious, parochial, rhetorical standards. They just don't like it because it shows how arbitrary their hermeneutics are aside from the goal of undermining Catholic doctrines.
The Catholic Church teaches that salvation is by grace; it is not by communion or baptism. Thus the issue of transubstantiation - while interesting - is a minor, dogmatic issue.
No, the Catholic Church teaches you WILL go to hell for not fulfilling your religious obligations. Communion is the very summit of those obligations.
Then what good is grace?
Then the Catholic Church is leading you astray if you believe that you will go to hell for not fulfilling your religious obligations. That, my friend, is heresy. You will only go to hell if you reject the Lord Jesus Christ as your Lord and Savior. Period.