Author of the article here, thanks for the feedback! I've been using my DSLR as my daily-driver webcam for ~3 months now, and it's been working perfectly. Glad you found it helpful.
I just found this, going to try on my Sony RX100VA and Sony A7III in a bit. Will report back with results.
edit: it worked! flawlessly! take that capture card price gougers!!!
I've started to use it, and it works flawlessly on Fedora. Well done!