"Vinyl has gotten to the point where it's exclusively for the collector, I guess"

In this quote, Joshua Homme is revealing his thoughts on the existing state of vinyl records. He thinks that vinyl has ended up being a niche market, scheduled only for serious collectors. This could be due to the increase of digital music and streaming services, which have made physical records less popular amongst the public. Homme's usage of the word "solely" recommends that vinyl is no longer a mainstream type of music consumption. He then includes "I guess," suggesting that he is not totally sure about this statement, but it is his perception of the existing state of vinyl.