Facebook Restrictions Workaround

As Facebook plays with its algorithms to the detriment of some users and producers I have a tech feasibility question.

Given that 90% or so of Facebook content is publicly available (even without a log-in) how viable is it for the creation of an external software platform so its users can select the content they want to see from the Facebook platform but have it pulled in to that as an external standalone application without Facebook's deciding what to whittle away or order the content in ways that aren't preferred?

So say I want to follow ten pages of Romantic poetry and art, Byzantine history, classical pottery (or software dev) but view this outside of the Facebook monster proper. I suppose maybe even with a logged-in option in case I wanted to comment or interact in some way on Facebook itself.

One assumes the bandwidth would mainly come from Facebook itself as the content provider, you are just using a theoretical portal through which to view it.

It could even I presume include a banner advertising option to fund the service. And be an intermediary between the user and the dreaded social media giant.