Never buy a TV without at least spending a few hours doing your due diligence and reading reviews on it. Rtings.com seems to be the gold standard, but you should always look at multiple sources.
A good QLED can be wonderful, especially in a bright room, and you never have to worry about burn-in. But if you have a darker dedicated home theater room, or just not that much natural light in you home, and don't plan on using it for any heavy static content use (like using it as a PC monitor), you can't beat the image quality of a solid OLED.
I have a TCL Mini-LED QLED, the original 8-Series, - it looks exceptional, and gets bright enough that it can hurt my eyes in the evenings. It is fully calibrated, and has great color gamut. The only negative (and it has become more significant over time) is that it is a HDMI 2.0.
Still, I prefer it to the Samsung QLED (Q85T, or something like that?) I have in the bedroom, despite that one being HDMI 2.0, as it just doesn't reach the same intense contrast levels.
I have an LG C1 in my home office, lest you think I'm just an LED fanboy, and, since that room isn't as bright, the lower brightness isn't really an issue, and it looks gorgeous.
I also still have some final generation Panasonic Plasmas in the exercise room and guest rooms, and, while they are 1080p with no HDR, they still manage to look really good.
As long as you buy a solid, well-reviewed TV, it'll hold up well for quite a while - when there are whispers of weirdness like this, I would just hold off until the entire mess is sorted, or buy something else; it just isn't worth the risk. You don't want to risk getting stuck with something you won't be happy with, since when you get the right one, there really isn't any reason to upgrade for a long, long time.
Personally, I don't plan on upgrading until Micro-LED TVs enter mass production and become remotely reasonably priced. Just not worth it for me.