Not all LPs were done well. Not all CDs were done well. Not all high rez is done well. Nothing new here.
Many early CDs were actually done very poorly. The real effort went into the LPs and the CDs were afterthoughts done by the new guys on not very good equipment.
The majority of the 24/96 albums that I have are very good and for those that I can compare usually better than the originals. But, jut like a LP or a CD, you never know how well it was mastered until you listen.
Their is an entire catalog of SACDs that can be offered as downloads, including some great efforts such as the Sony Masterworks Living Stereo SACDs which are just starting to come to market. The majority of SACDs were mastered very well and I am really looking forward to those becoming available. Even the 24/88 LPCM versions of those are usually very good.
There is no issue that some of the new hi rez files are not much better than the original CDs. But a lot of them are very good and getting better.