"Google is not forgetting the old web unless we see evidence of content disappearing from the index that have been consistently hosted at the same domain & URL

"Google is not forgetting the old web unless we see evidence of content disappearing from the index that have been consistently hosted at the same domain & URL since their original posts." I can, very loosely and anecdotally, confirm. My personal website has been online for about 20 years and I just picked some deep strings of text and searched for them and google has the whole thing indexed just fine ...