The news that AMD will only allow Zen 3-based Ryzen processors to be used on 500 Series and later series motherboards have not gone down well with B450 and X470 motherboard users. Seeking to express their discontent, a group of users created a petition on Change.org to collect signatures and for AMD to change its position.
Although the petition only has 379 signatures thanks to its low circulation, on the AMD reddit there are posts with hundreds and hundreds of comments expressing their discontent, which is why the community is clearly not happy. We've also seen style feedback in our community, and because both AMD and the motherboard makers promised compatibility until 2020, we find it only fair that they keep their word.
For now, AMD has not commented on it, and we have no comments that we can make public from manufacturers, so we will have to wait a little longer to see how the situation evolves. We recommend that you express your opinion on the networks and in the different forums, and perhaps AMD may change your mind.