This is not something we are trying to get hundreds of thousands of users using, so you wont see it being announced or advertised. Use Notifiarr if it is helpful, don't if it isn't! The information in the wiki is more of a quick high level overview and you can visit the site for full details or hop on Discord.
This was built about 2 years ago for me and used by only me locally until about August of 2020 when I opened it up for others to use. My goal has always been to have a single location for common notification needs, so I am not jumping around 20 apps to do things.
Note that the Notifiarr Client is required for Media Requests