Majority of forum information is in text form, I will guess it is more than 90% of it. We still have all of those preserved here.
Broken imgur links was the major issue that caused loss of information. There were fixes like this
[1], but with many members inactive, it will not get around quickly enough, or ever for some posts.
I do not know how old threads are difficult to discover for newbies. If they read on how to search effectively and have an idea of what they are looking for, they should find it
[1]
https://bitcointalk.org/index.php?topic=5452662.0- Jay -