Shouldn't we take into account that the industry is also famous for being a monetization path for bloggers, pundits and grifters, for whom a book deal means jackpot; combined with a minimum word count pushing authors/ghost writers to pad their work to reach an average page volume ?

I mostly read non-fiction, so the landscape is probably grimmer, but actual good books aren't that many, and I feel that has been a common wisdom for centuries. Except we're trying push that fact under the carpet as already fewer people are buying books.

There are more books now than ever, and we've been producing books in vast numbers for hundreds of years. Even if the vast majority were garbage there would still be more great books available than could be read in several lifetimes.

Have you considered trying to optimize the way you discover your next read? It almost sounds like you're getting your recommendations from social media, and that it isn't really working out well for you.