I believe I'm familiar with the post in question, and I have to say I was torn between two possible responses. Either aggressively encourage the person not to post any similar requests, or calmly return to another forum and keep my reaction to myself. I opted for the latter, but I'm still sitting here a little stunned.
I didn't catch any responses or followups, but if the descriptions are accurate, I know the type. I do try to respond initially by educating, but when those suggestions are rejected in hostile tones I tend to respond likewise.
Revenge is a dish best served cold...
With a side plate of steaming entrails,
And a nice Bordeaux!