Exactly and for the same reason Lemmy won’t become as big as it has the potential to become. “Join Lemmy!” “How?” “Go to one of hundreds of websites and join and you’ll have access to the Lemmy content the admin decided you could have access to… Oh and people logging in from those other sites might not have access to the content on your site so you might not be able to interact with a big chunk of users unless it’s on a website that is connected to both your site and the site your site isn’t connected to so choose the site you create your account on wisely! Makes sense?”

Also, even if you find results through searching, it sucks that it probably brings you to an instance that isn’t yours so you have to figure out a way to open the link from your own instance in order to post in the discussion… That is, if you actually can from the instance you’re signing in from!