Yes, but in society we can not all operate in our own private reality. I can't just claim that for me, all the traffic lights are green so I am exempt from traffic laws. I will still get a ticket and the judge won't be persuaded by my explanation. The "public reality" of my checking account balance will still fall by the fine imposed whether or not it falls in my private reality. We have to have a public reality to interact. Yes, they can live in their private reality where Intel is the evil villain, all because AMD says so. But in a public reality we require evidence to establish facts.
In the real world AMD's share price is effected by real world events. I would prefer to operate in the real world. Other's mileage may vary.