"In other words, is a King Crimson or Moody Blues CD remastered LOUD?"
I have read that most CDs since mid 90's are "louder" overall compared to prior as I understand it due to advancements in the mastering technology and I think equalization curves applied, as I recall. Do not recall the details but I observe this to be the case in general with CDs I own (many).
That includes KC and MB remasters I have heard as well, however these are done well and not overly loud nor is waveform clipping or other forms of overt dynamic compression obvious. These are VERY good remasters/recordings overall that compare favorably to original vinyl I own in good quality and much superior to any similar CD issues of these I owned prior from the 80's, mainly the entire MB catalog.
Granted some louder mastered CDs in more recent years can approach ear bleed territory, but the vast majority I hear range from on par with most overall to some of the best sounding CD recordings I own.
See my agon reviews for a couple reviews I have done of MB CDs including some comparisons to vinyl. My ISOTLC remaster is newer though than the ones I have reviewed, and is at least as good or perhaps even better.