Streams are probably a way better measure of popularity than sales ever were because once you buy an album, it counts once whether you play it one time and stash it away, spin the grooves out of it daily over a few weeks, or listen once a week for a few years. Streams get counted with every play of the song.
But that's also how fans of certain artists game the system. They put their device on repeat, and that drives up spins. You're not measuring the popularity of a song, but the intensity of the fan base. It's unfair to the other artists, but there's really no way to prevent it. So Wallen's music is overwhelming the system, and it slows down the rest of the chart. The Josh Ross song just spent 68 weeks on the chart waiting for a chance to slip in and get a #1. That's a long time to play a current song. That also takes a certain level of devotion from radio and radio listeners.