Absolutely.
Search is paramount.

Some Nostr clients, such as online Nostrgram, have difficulties displaying the last notes posted from an npub. This naturally depends on which relays have been utilized, but the user experience results in a situation where there is no properly working timeline. When a user can't see new notes from an npub they follow or visit, interaction and engagement will be impacted.

Zaps, quote-tweets, replies + likes, all function as feedback data streams, giving users some information about the extent of their reach. This is one of the reasons why 'likes' have a purpose for small accounts with limited reach. Users have an interest in measuring their reach in some way, not the least to verify that their relay setup works properly.

Having some idea of how many people that are able to see a note is extremely important when an individual compare different social media options to judge where it is makes sense to be active. If the reach on Nostr is worse than on a social media where you are shadowbanned, then people will choose the app where they are shadowbanned, if that means a better reach in relation to Nostr.