I have created an extension to hide the feedback-tabs that appears in the Communication site. Is working fine.
Now I have created a subsite and in order to hide the tab in this subsite I have to install the extension again. Is possible for the subsite inherit the extension so I don't need to install it again in every subsite?
The concept of inhering "extensions" is not a feature provided Today so you have to install it again...what you can do is review new ALM API in SharePoint Framework and new PnP schema to automate the installation