There are a lot of unanswered technical questions, and even more around if it would actually benefit a society enough to justify the high costs.
A true ridged Dyson sphere would not be orbit-ally stable, and even the assumptions made around the efficiencies in producing it will require massive advances in physics.
Even ring worlds will require discoveries of new physics related to superstrong materials, antigravity, thermally tolerant materials etc…
Freeman Dyson’s plan is most likely impossible in our solar system, and the whole topic is nothing more than hypothesis at this point in time. Freeman expected to dismantle huge portions of Mercury and Venus, and this would make the Earths orbit unstable as an example even if the above problems were solved.
But that said I am glad that people are thinking about it, even if it is not ultimately possible.