For those looking for cheap dev boards, I've had good luck with 'HiLetgo' on Amazon. The WROOM-32S is my go-to, but I also use the WROOM-32U when I need an external antenna (it _must_ be connected) or the 32S+CAM module for the camera. I haven't gotten a DOA component yet.
The Ali prices aren't significantly cheaper than many of the sellers on Amazon (at least in small quantities), you don't have to wait a month, and if you get a dud, replacements are easy.
Even though I started with the 8266, as the article mentions, there's little reason to choose that outdated board at this point. It's worth the extra $1 to get the 32 in a DEV board configuration. Having the CP210x and USB onboard is also worth it for the hobbyist.