Not for the reason GP mentioned, but you can increase the loudness much more on CDs than on vinyl, since on vinyl the needle physically jumps out if the loudness is constantly high, so it needs to be mastered with more dynamic range. There is also the thing that the high bitrate/high sampling rate masterings sound much better in that regard, since they target a different audience
Sure, if you deliberately refuse to interpret the context.
Vinyl releases have a different target market and are mastered with more fidelity in mind, while CD releases are mainstream, and have been mastered with small dynamic range for decades because of the loudness war.
