Can the view mode outer packaging of entities be deleted?

Hello,

Sorry for answer delay.
Not sure to understand.

You want to strip entity wrapper ?

<article{{ attributes }}>
... the content of the node
</article>

becomes

... the content of the node

If you talk about the entity wrapper set in entity template, this module can't as it is only targeted to fields on a "per view mode" basis.
This may be easy to do in your theme by overriding entity template such as node.html.twig.

Regards.