The Enshittification of Boingboing.net(?)

I could post a bitter complaint here how it has become impossible to post comments on boingboing.net since their latest move to Substack, how you keep running around in circles, how clicking on the "comment on Substack" link at the bottom of articles just leads you to an overview page with commenting functionality in sight, how clicking on any article in the overview tells you to send money to Nigeria, whatever. But I am confident I am not the only reader of HN who has experienced this and I thought we might want to discuss the topic:

Why has BoingBoing.Net enshittified itself?