I love building my own uBlue image. Tinkering is done in toolbox containers, definite changes are baked into the image. Completely custom (to me) and when you get it right it will just work anywhere. If I would brick my PC/storage I can just boot up another and restore my (back-upped) home dir with very little effort.
Good for them. It’s an organisation’s free choice to pick the platforms they post and interact on, if any. Their presence is a service in itself while there are plenty of other ways to follow or reach them if needed.