The reason you got that reaction in your last thread is because you’re dealing in absolutes, and most people don’t. Most people do not have a threat model that requires them to worry about whether or not second-hand Thinkpads are secretly a honeypot to steal their data. And I honestly would wager money that your threat model doesn’t require you to be that conscious of attack vectors either.
For most people, the common sense steps to limit corporate tracking of personal data is more than enough to meet their needs. There’s no reason for anyone to sacrifice convenience for security to the degree you seem to be worried about, if they don’t have a practical need to. For example, they are doing something their government would frown upon, be it political activism or illegal activity.
That doesn’t mean those people aren’t privacy conscious. It just means they don’t require absolute privacy, which is impossible to obtain online anyway. And just because this is a community dedicated to privacy, it doesn’t mean everyone here is as worried about privacy as Edward Snowden. Most of us probably don’t need to be, because we didn’t piss off the NSA, and we aren’t worried about covert rendition to Guantanamo Bay. So when you make posts like you did, worried about an attack that is so unlikely that it would be incredible if it actually ended up being worth the effort, of course people are going to poke fun at you.
DNT didn’t do shit anyway. If you’re relying upon corporations like Google to not track you just because you asked nicely, then you have a very naive view of how much they actually give a shit about your wishes.