and there are more than 5 screenfuls as I page down.
Should I update? —> probably not a good idea. Your IDE would become cluttered with Smartapps that you are not using. Only update the smartapp(s) that you installed and are actually using from the SmartThings Public repo. Avoid the new (only in github) and only look for the updated (only in github)
New isn’t updates for existing code, it’s totally new code from that repo.