You don't need new profiles if you can just publish in different communities and manage those. 
That way things can overlap (as they always do).

You can post your Freedom Tech articles in the communities most suited for them and your insights on Photography in a completely different set of communities. And you can publish your article on a Nostr app for photographers in a selection of both of these niches of communities. 

Without settting up a new profile.
With different prices & guidelines for each community.

And with something the internet never had before: 
The members of your selected communities for your post all come together and meet around that post. One event ID, one reply section accessible to all these members.