Long story short, I gave the upgrading another go. After a lot of unnecessary struggling, I was able to successfully bring my Enthusiast installation up to speed and compatible with PHP 7.3 thanks to this updated version of Enthusiast.
Hello, it's been a long time since I last updated! I recently migrated to a new host, and since Habari has not been in active development for years (and support itself has likely dwindled), I decided to let go of the entirety of my old site blog.
I will cover what has changed with this site refresh.