But they are still an excellent source, and are about as good as it gets compared to most (supposed) non-partisan media these days.

Fwiw, I also believe their bias to be almost entirely unintentional, which is way more than can be said for most sites. For topical seminars, where authors might actually argue for a side, they do a decent job of getting various opinions from multiple sources, even if it's not always exactly balanced 50/50.

And they disclose all cases in which someone might be involved.

Like anything else, you still need to consider the source when reading it.