There is no one-size-fits-all answer to this question, as the answer will depend on the Tumblr account and specific circumstances. However, in general, it is possible to delete a primary blog on Tumblr, although there may be consequences if done incorrectly.
When creating a Tumblr blog, the user is given the option to designate it as a primary blog. This means that the blog will be prominently featured on the user’s page, and other posts will be displayed as thumbnails next to it.
Deleting a primary blog on Tumblr will remove this prominence and could lead to loss of followers and engagement. Additionally, any posts made on the deleted blog may not be visible to current or future followers.
While it is possible to delete a primary blog on Tumblr, it is important to be aware of the consequences before doing so. If you need help deleting your primary blog on Tumblr, feel free to reach out to a support representative at Tumblr or consult a online guide such as this one.