Why do you think content that is excluded from the algorithm is more legitimate?
How do you know it was excluded?
What do you think about the notion that many/most people who claim they are neither left nor right end up demonstrating that they are actually pretty right-wing?
I'm not even sure how to respond to that. Maybe this is true for the US, but in other places of the world, societies aren't yet as polarised (although, sadly, it looks as though we're copying the American model more and more).
Maybe you should make it more precise what you mean by left and right, otherwise it's always easy to call something "right-wing" just because it's more to the right than whichever positions you espouse.
(For the record, I always considered myself to be rather center-left, and I still hold many positions that are broadly left-wing, but recent events have made me realise that there's also a huge part of leftism with which I fundamentally disagree, so I'm not sure if I want to call myself that any more.)