Earlier quoted context omitted.
The repo contains just a list of the companies with useful details about them. Ofc, if you want to get the jobs straight into your inbox, you have to subscribe. These job notifications go beyond that list so it's worth it, IMO.
That's useless information by itself. The only reason this is a "repo" is because you're trying to collect developer emails.
No obligation to subscribe, though. One can always unsubscribe, too.