Vinyl records have a typical dynamic range of around 70 dB, depending on the equipment used to record the audio and cut the record. CDs have a typical dynamic range of 90 to 93 dB ...
That is completely false. It’s actually very rare for an LP to achieve 70 dB dynamic range and a CD with a 90 dB dynamic range would be even rarer.
If you make your own measurements or refer to the dynamic range database, you’ll see that, in practice, an LP frequently has greater DR than its digital counterpart. Again, this is a consequence of the Loudness Wars.