I've been using the same version of Jekyll, using the same outdated, discontinued version of ruby, for more than 10y. I refuse to learn anything about ruby, or spend any time upgrading Jekyll or any of the 2 plug-ins I use, and I take a weird pride in that. It works, it generates my blog, I don't want it to do anything else. I have no idea how it works anymore. For all I know Jekyll has been abandoned. That version of ruby might be riddled with bugs and security holes, and why would I care? it's only used when I generate the website, in a docker container that doesn't talk to anything.
Eleventy might not receive new features, your website will still work.
Eleventy might not receive new features, your website will still work.