You got downvoted because your comment in that article makes zero sense.
"Nothing is clear to me, we are in a shit load of confusion because of these goddamn console names with ZERO creativity : can I play my old physical games on CD from the XBOX of 2002 on this new series X ??"
Sure you might find the names confusing, weird, lacking creativity. But what on earth does that have to do with Backwards compatibility?
The downvote system can be used by fanboys, but it's regularly used to filter out comments that are downright trolling, spambots, offensive or nonsensical. And yes unpopular opinions get downvoted too. If you say you think the PS4 or Switch is garbage you're going to get downvoted. Democracy at work.
LTD: PS4 - 125m, Switch - 110m, XBO - 51m
2020: PS4 - 9m, Switch - 22.5m, XBO - 2.5m, PS5 - 4.5m, XBX - 2.8m