I agree with you in part:
Sure older models i do understand. I am not expecting that LG compiles a WebOS version for SoC that use ARMv7l ISA and only have 1GiB of RAM (or less)(and all the hardware on the board etc, etc, etc, plus older GPU in the SoC, etc, etc...)
But one year old models? Like early or mid 2020 ones? No! That is pure BS from LG part.
Yes it would cost LG a few pennies to pay devs to reach that QA, but it would keep costumers happy. This is blatant disregard and greed (btw LG is not the only one doing this. In fact i dont think LG is the worst one, but still it pisses me off).