I can understand this perspective, indeed there is a lot of info on the guide post. Sometimes it's enough to skip to the conclusion or just the scores... but if you see a headphone that catches your fancy, it's worth reading.
The K612 review has a clearly labeled (with a title in bold and underlined) Amping section right after the sound impressions and right before personal recommendation and final impressions. Clearly as in hard to miss, if you read the post multiple times or even just once. Mad specifically says "For gaming, you can forget about using the K612 Pro off the Mixamp alone if you attempt to use a mic." He goes on to suggest picking an amp with neutral to warm-sounding amp to keep from pushing the K612 into fatiguing territory.
From the perspectives of those regular to this thread (many of whom have left), we often see the same questions asked again and again. Though each new poster asks for a personalized reply, it's aggravating to the posters with experience in this area because the answer to their question literally is already written, and the same questions cycle through again and again, as if this thread was customer support. Now, I'm still here because I get something out of hearing about new products or sharing new info I find, but I can understand others who point out the answers in the first post... because that was the point of the first post anyway, as a reference. I have to imagine a lot of people do read the guide and do get their questions answered, occasionally I see new posters announcing their plans and excitement, and their impressions on how they like their new gear (which I do enjoy reading!).
If you want see what made this thread fun, go back to posts two years ago, where MLE was buying and reviewing new headphones like mad, people were coming here for news and posting their own suggestions and comedy, and yeah we had people asking about amping or computer stuff that was out of scope but there was enough other stuff going on that the pace was going pretty quick. Nowadays... Well, I'm not saying anything, I'm just saying the last guide update was half a year ago.