Well I don't get the Samsung hate myself, yes I am disappointed it doesn't support Dolby Vision, but I don't really mind I guess. At the time I was in the market RTINGS reviewed the Samsung Q90T as having the best HDR on the market which is mainly what tipped me to go with it. I was upgrading from a Pioneer Kuro Elite? Plasma, and it was/is a huge upgrade for me still. Everything about the Samsung is so much better, the clarity, the blacks, the HDR, I don't miss the old TV one bit, and I'm actually really happy with the one I have now. They revisited their review a few times, but it's still rated very well, and does 120Hz VRR and is rated extremely high as a PC monitor as well with 4:4:4 and great response times, so it'll be fairly future proof for me. I don't really see the PS6 or the PS7 breaking past 120fps 4k to be honest, and from my viewing distance 4k is minimal gains anyway, so 8k is just silly for me, unless I went to super large screen of ~85".
I don't expect I'll ever see burn in based on my usage (it's seldomly used for TV and I don't game for 10 hours in a row or anything, at worst it's displaying a Google photos type Shield TV Pro screen saver when it'd idling), and it'll likely last me until I feel like replacing it, which I can't really image would be anytime soon.