Its called a POP chart because it counts which songs are popular. Charts do matter, you can't discount them all of a sudden just because you're failing at having popular songs. That's not how it works.

"Thriller" the album was helped very much by "Thriller" the single; Whitney's(it was hers) "The bodyguard soundtrack" was helped very much by her cover of "I will always love you", Janet Jackson's "janet" was helped very much by her single "That's the way love goes". So too Madonna's "Ray of light" and the single "ray of light".

Most classic albums were accompanied by hits. That's the way its always been that's the way it'll forever be. Just cause you can't satisfy the popular pallet in singles anymore doesn't mean you should discredit charts. Only people who do that are those that can't get hits.

Plus, music is art and when you start comparing art according to quality, you run risk of not making sense because art is VERY subjective. For example, MILLIONS of people think AC/DC,The Rolling Stones, Bruce Springsteen, MJ, Fleetwood Mack are "brilliant art" but I hate their music resoundingly. Same thing with rap/hip-hop. Most people who look like me (black) love it but I've just never liked it at all and that's fine.
Singles charts are an objective gauge at what song is popular, if yours is not there then its not popular, deal with it but don't discredit singles charts just because your songs are no longer "popular". Nobody has the duty to like the type of music you like. What's the saying? Everybody hates lists that they aren't a part of.