unfollowable

Unfollowable describes someone or something that cannot be followed.

On social media, an account may be unfollowable because of technical restrictions or privacy settings: I tried to add her but her profile is unfollowable.

The word also applies to performances or acts so exceptional that no successor could match them: Her keynote was unfollowable—everyone after her seemed flat.

Similarly, unfollowable logic or reasoning is too convoluted to track: His argument was completely unfollowable.