Read at Social Media Today
A new update in Threads allows users to hide both Like and Share counts on their posts in the app. This option was previously only available to hide Like counts.
As you can see in this example, shared by social media expert Matt Navarra, the new listing now enables you to select 'Hide like and share counts' in the post detail screen. Previously, you could only hide Like counts in isolation.
Users can choose to hide their engagement counts on an individual post basis or make it the default setting for all posts in the app. However, if the default setting is chosen, it will also apply to Instagram posts.
The option is available at the post level, so you can opt to hide your like and share counts on each individual update, but you can also make this the default setting for all of your posts in the app (under 'Settings'/'Privacy'). Though if you do, that'll also apply to your Instagram posts as well.