Just because you have a positive bias towards them, you cannot be angry or dismiss somebody who has the opposite bias. We are both right, we are both wrong. I won't change my opinion, and neither will you.
You carry on advocating for them, and I will carry on advocating against them. Our experiences are polar opposites, both based on fact.
My opinion is that many people, especially those that will be building AMD systems (not the general public who does not even know what a NIC is) would rather have an Intel based networking product, over most other solutions. Maybe I'm wrong, but sales and the marketing out there seem to prove otherwise. If it is simply false that Intel provides superior networking products, then why are they all over the premium offerings? Rightly or wrongly, there is often a stigma attached to low cost Chinese or Taiwanese networking products, often based on driver quality or raw throughput and CPU usage numbers being worse than Intels offerings. And I've have seen and experienced this first-hand, many times over the years.
At the end of the day, if I am provided a choice of two motherboards at a similar price and all other features the same, but one of them offers an Intel network interface, and the other a MediaTek, I will gladly pay a reasonable premium for the Intel solution. If that's just me, them I'm an idiot, but a happy one.