>> Please show me the ad hominem. I said I think you may be purposefully misunderstanding, that is not ad hominem

What you wrote was "I'm not sure if you're purposely being silly or what". Also, you called the other poster a "moron".

I see your account is relatively new so here is a link to the HN guidelines:

https://news.ycombinator.com/newsguidelines.html

Please have a read. They will help you have a civilised discussion on HN and you will be better able to get your point across. For example, the reason your post above was flagged to death was because of its aggressive and personal tone, not because of the opinion you express that is also held and expressed by many other posters on HN.