Lone wolves can and do produce a lot of valuable output for businesses. However, on bigger teams, somebody's gotta take care of the juniors.
Junior devs, interns, even moderately experienced devs can all benefit immensely from mentoring by senior devs. Mentoring is a fuzzy thing that happens in the margins, and that's exactly the kind of thing that's hard to replicate in full-remote work.
Of course, everything in moderation. Senior devs need some time alone to churn and burn through tasks, but less experienced devs need guidance, leadership, and experienced perspective. And sometimes you need a mercenary like the author to just run solo and get it done. Different strokes for different folks.