When Sync for Reddit show a popup promoting Sync for Lemmy, it should also point to this kind of service, to ease the migration. It would also be nice, if sync for Lemmy also had a shortcut.
Besides that a link to a more general community directory like https://lemmyverse.net/ would be nice to have.
Well, Sync for Reddit is basically being kicked off Reddit, so a new app is being created to work with Lemmy. Of course it is in the app developers interest to promote the new applicataion, and from what I understand they plan to do so by adding a popup to sync informing them of the new Sync for Lemmy application. And if they are pointing Reddit users to Lemmy, it is only logical that they want the users to be able to easy find their place and find the communities of interest… so i don’t understand why they should not do that. What you are saying is that they should not try to make any users use their new app they have spent time developing, and that just doen’t make any sense. But I agree that they should not promote any particular instance or specific community, which is why I pointed to services that list all instances and makes it easy to find a suitable instance, and makes it easy to find communities that matches any particular subreddit.
I think I didn’t formulate things the proper way, or maybe I don’t understand all the details of your answer because of the language barrier, but I believe we’re saying basically the same thing.