Given that lifting fleets/swarms don't exist, I think that scaling up a conventional aircraft is actually lower risk. Aside from the technical risk getting lift

Given that lifting fleets/swarms don't exist, I think that scaling up a conventional aircraft is actually lower risk. Aside from the technical risk getting lifting fleets/swarms certified would be an extremely novel development. Super jumbo aircraft should have a much more smooth regulatory pathway. While the physical scale of the aircraft is huge, its actual lift capacity isn't groundbreaking. They quoted 80 tons. That's well within the capacity of today's military strategic lift (C-17s can lift 85 tons). And in terms of size comparison, compared to the An-225 (RIP), the quoted dimensions are 108m (Windrunner) vs 84m, 24m high 18m, 80m wingspan vs 88m. Certainly a non-trival increase in linear size, but it's not a magnitude leap either.