I believe this endpoint is the only way to retrieve json with posts from Reddit, so every single app would use it. Even Apollo used it, although it used OAuth for that. See this line:
Yeah I guess it's an API, but it's using public endpoints that don't require registering an application and creating an API key, or being subjected to the same rate limits.
This part seems to be incorrect. See this line:
https://github.com/kaangiray26/geddit-app/blob/main/src/js/g...
It's literally a call to reddits API.