I haven't formed an opinion. Earlier today I glossed over their approach/methodology but did not do a deep dive.
If we operate under the assumption that this source is in fact reliable, I find it perplexing that those on the left criticize others who consume right bias outlets while admitting that they're consumers of left bias outlets.
Which leads us back to the importance of diversifying one's media sources. I regularly consume websites of CNN, Fox, Marketwatch, Newsweek, and a few others while listening to NPR/IPR and WHO 1040 on the radio. In regards to TV, 99% of my viewing is from the three major networks, mainly CBS in the morning and ABC for nightly news.