I think Hanselman does a lot of his recording outside of a dedicated studio these days. In studio recording of podcasts is a whole nother level of commitment and cost.
Sound quality is king in podcasting! Anyone thinking of doing a solo podcast from home/office would be better steered towards something like the AT2020 for mid range or PR-40 or SM7B for a comparably equal investment compared to the mobile gear mentioned in the article.
I listen to a fair amount podcasts while I drive. My belief is that though poor sound quality can turn listeners away, poor content will insure that there are few listeners or none. I am willing to put up with sound quality issues for good content. I'll skip episodes with mediocre content.
YMMV.