Recently, Meta has been steadily resolving issues with Threads. The latest update includes the option to prevent posts from being displayed on Facebook and Instagram. Today, Threads users who wish to discontinue using the app can delete their account without having to delete their Instagram account.
To delete their profile from the Threads app, users can navigate to Settings > Account > Delete or deactivate profile. This feature has been long-awaited by Threads users, as many have felt frustrated with the inability to delete their Threads profile without deleting their Instagram account.
Despite the introduction of this feature, Instagram and Threads remain closely linked. In order to use Threads, users are still required to have an Instagram account, as the messaging feature of the app is integrated with Instagram.
While Meta may not be separating the two services completely, Threads may become more independent from Instagram. Meta aims to make Threads compatible with ActivityPub, an open-source protocol that powers Mastodon and other services in the fediverse. Meta has not yet disclosed the details of how this integration will work, but this collaboration may provide users with new ways to engage with content on Threads, even if they wish to avoid Instagram.
TLDR: Meta has added the option for Threads users to delete their account without deleting their Instagram account. However, Threads remains closely tied to Instagram and may become more independent in the future through integration with ActivityPub.