While I don't generally express myself in the same manner, I too have been critical of height fan-boys.
The reason is not an aversion to height, nor a desire to insult.
Rather its two-fold; first, I view any obsession about anything as bad. I don't care if its the opposite sex, the same sex, tall buildings, model trains, sports teams, musicians or actors etc etc. Its ok be to be interested, and appreciative of any number of things, but obsession is bad. Two, there are real adverse consequences to a height-at-any-cost worldview.
Height itself is not a problem, per se, but pedestrian wind conditions are, shadowed school yards and parks are; the ability to evacuate a building in the event of a fire is; the cost to construct it (affordability is), the impacts on traffic/congestion/transit are etc etc.
Which isn't a writ large opposition to tall buildings, many of which I support. Its an opposition to myopic, obsessive thinking that somehow another 10m, or 10 storeys will make the world a better place. Probably not, and certainly not merely because of the height for its own sake.
I prefer to see posters express nuanced views, as politely as possible, on any and all subjects; but those who oppose nuanced thinking (whether that's anti-height, or obsession w/same) can be a source of frustration.