My earlier post that you quoted says, “The original post of this thread mentions the importance of college prestige in engineering.” “Mentions” does not mean the that the OP is specific to engineering – only that engineering was mentioned. Different posts within this long thread have talked about different topics on the list in the OP – there were some posts about law, some about finance, some about consulting, some about biology, some about academia, some about CS, … Each post of this thread does not need to specifically mention all of the 10+ topics of the original post. Instead sometimes there are series of posts that primarily discusses only one of the topics.