[fproy2222]

would “discredit the poster and avoid” be proper?

[Religion Moderator]

No. Attributing motives is a type of mind reading and therefore, "making it personal."

Your point could have been made academic by changing one word as follows:

personal: You have a nasty habit of using stuff like this to put down and avoid that which is important and/or true.

academic: People have a nasty habit of using stuff like this to put down and avoid that which is important and/or true.