Same here 10+ years on Jekyll, old Ruby version, zero interest in changing it. I run it in a container too. It just works. It generates HTML and HTML still works. I'll be on this setup for another 10 years.
Same here. I have multiple sites working on Jekyll for almost 10 years as well. I’ve considered moving on to other frameworks such as 11ty and tried local versions for the sake of learning and “upgrading”. But in the end Jekyll still works flawlessly and is very easy to maintain. I use a newer version of Ruby though.