One should define meanings one uses for words in post then. "Unnecessary" as in car can drive without upgrades with everything stock? Yes. Or "unnecessary" in way that no coilovers on market bring any worthy enough improvements to comfort & handling on street (which meaning i guess he really meant)? No.
Fact that he is not willing to pay coilover cost to get what they provide doesn't mean they aren't worthy purchase for others, yet he still generalizes and bashes those that don't share his views.
I'd say such narrow mindedness is good target for some trolling, so i did exactly that.