Any Advice for those Listening to Youtube Reviewers?

Some youtubers do give useful technical information. You just need to listen to them selectively. Audiophiles are not blind. If the youtuber raves something that is not really up to expectation and misleads people to make wrong buying decision, the user feedback will show. I always take their reviews with a grain of salt, cross check them with others and couple with the demo listening (good quality one) to verify their statement. So far, I have been lucky. Except two entry-level DACs that I need to resell to upgrade to higher end products, all the purchases based on the on-line reviews and Stereophile are pretty satisfactory.  Trust me, their reviews / recommendations, if quality ones, are much more informative and reliable than a few sentences' write-up from forumers.

That was why I did not list Jay.

Many of the posters herein are exceptionally bright people and they should consider doing some YouTube channels to explain things.

Agreed.  We will be all benefited.

FWIW, here is the list of the on-line reviewers ordered by the number of subscribers. It does not suggest the quality of contents they have presented but give you some idea on their popularity. The ones highlighted are those I listen periodically. Some of their verbal description of the gears' sound traits they review are spot on. Some often gave measurements and how that entails to the actual sound. Some gave rather technical details to the components under the hood. I appreciate the time and effort they have put together for each show.