A lot of LGs TVs tend to be hit, or miss in terms of how long they last. I had one LG TV that lasted me 7 years, and one that is now 10 years old still kicking. HDMI 2.1 is definitely what you want for the new consoles if for nothing else for future proofing if this is going to be a investment priced TV. I say investment priced as in over 1k in pricing. If money is not a super huge factor then look into Samsung they tend to be of a slightly higher quality on average. Though in the case off both Samsung, and LG the quality as well as features tend to be more the higher in tier you go. For example Samsung's S series is their premium line with that market in mind. They are pricey though thats their flagship.
Far as any particular model of any TV or anything really the reviews do tell a lot even more if it has been on the market for some time.
I found this list of 2020 TVs that range from many brands, and should provide bit of comparative incite. Be advised there is quite a few though good to know ones options.
In truth a cheaper one like a TCL, or other brand may fit your needs. Far as burn in with a OLED that will always be a thing regardless of brand, or series. You may want to hold out for a mini LED display as microLED is still not really ready for mass market. Though if you expect the TV to only last few years anyway then by tthe time burn in sets you'll be shopping for a new one.