No. Once 3rd party apps shutdown people will realize how shitty the official app is.

Once sync for lemmy releases majority of sync users will install and start using it side by side with reddit.

If Apollo, boost and other third party apps developer also switch to lemmy then it will become even more active.

At some point we will start searching keyword + lemmy on Google.

Newpipe has different user interface. Revanced is exactly youtube with just modification to remove ads and add more function like sponsorblock