But that seems to support my point. Grievous matter, sufficient reflection, full consent of the will, will constitute mortal sin. These things determined within the confessional with a Priest, is a lot different from lay people on message boards having that authority.
OK, so you really don't know the conditions. Sufficient reflection is not one of them.
Because you don't know the conditions, you don't see how the conditions actually work against your stated point.
The OPs issue was with lay people attributing heresy to other people based strictly on comments that don't conform to their wording. I can only assume why you took issue with the comment I made because the only reason you gave was 'it doesn't make sense'. That was more of a statement of your opinion about its merits rather than giving any direction on how it was faulty theologically. If it's your opinion we can simply agree to disagree, but if it's a theological error, you need to direct me to the specific heresy for me to respond. I could only assume it was something about my belief on sin and the state of sinlessness. Unless you specify your theological problem with the statement, I'm not able to properly respond.
I have specified my problem with the statement, and gone into detail in a number of posts. The primary problem with the statement is that you made it up. It's not rooted in any Church teaching whatsoever. I explained why it didn't make sense.
Further, there are interesting things happening in your response. You seem to be asserting that one may propose any position on a theological matter and, unless it is a formally defined heresy, it should be held as worthy of merit. Is that your position?
It is also interesting that, by demanding that I identify a specific heresy, you equate my telling you that your position doesn't make sense to my telling you that you are a heretic holding to some unnamed heresy. That explains a lot about your highly subjective response to the otherwise objective conversation occurring in this thread. It's also more than a little hilarious that you complain about people calling others heretics, then demand that I call you one in order for you to "properly respond."