Your comment:
“John 2:6-10. Read the Holy Gospel every once in a while and you, too, will become Catholic and taste peace.”
The words after the snark: “You too, will become Catholic and taste peace”
Stating that a poster will become a part of a particular belief system is mindreading, which is making it personal.
Also, your quoted sentence above could be seen as if the words following John 2:6-10 are from that area of the Bible and they are not.
OK. So I can express my conviction that everyone who reads the Bible attentively will become Catholic but I cannot direct it to a particular poster? Because surely I should be free to express that general conviction.
I found it to be wishful thinking on their part about the future; not mind-reading.