Surely at the very core of an internet forum is that people would post messages. Why bother posting on a forum if a thread is going to be deleted because of an adjective?
An adjective describes a noun. Miserable is an adjective. Old is an adjective. The use of such words to describe a less than joyous woman of 88 years of age is not ageist, it's descriptive. Ageism is about discrimination or an undeserved negative impression. Describing somebody based on their actions is not ageist. It's using the English language.
And yet the thread repeatedly referring to people with ginger hair lives on?
You've got to wonder.....