It's not an 'in my view', it's objectively wrong to outright assume that somehow people who read some site are better than others. There is no reasonable way to

It's not an 'in my view', it's objectively wrong to outright assume that somehow people who read some site are better than others. There is no reasonable way to interpret the original comment in any other way. Furthermore, it's not an ad hominem because an ad hominem is an argument that is being made by discrediting that argument not on its merits but on an unrelated other characteristic of whoever made it. I'm not doing that in any way - the use of 'circle jerk' in this context is perfectly warranted as a way to express disapproval of the poster's myopic thinking methods (or rather, myopic world view based on lack of thinking).