Not if they don’t want to be ping’d.
If you say so.
No, they say so.
Which you did not until afterwards, while being part of a forum means you should expect to be pinged to a response to the same poster you are in conflict with or on the same issue, and concurrence on a issue should be welcome. And as said, this is common here on the RM and never has anyone objected to it, while you chose to send me two substantial posts in response to my one. But I will respect your wishes.