Do recruiters actually care about your open source contributions? Especially now when only LLMs read CVs and match them against strict criteria, I doubt there are many companies that actually care about your work outside of work, in fact they might care in opposite direction - thinking that you'll be distracted from work
In my experience no, it's usually just something you mention during the tech rounds in passing.
Just speculating (I use zero automation when recruiting), but automated candidate ranking systems could well still look for signals that were valuable years ago, but no longer are. It's not a given that people using this stuff even understand the criteria under the hood.
Same story as SEO, I presume. Google surely understood their ranking criteria deeply, yet couldn't exactly win that fight.