Theoretically one could make a tent lighter than anything in the shops without any sewing for a reasonable price. Anyone interested? You just buy DCF https://ripstopbytheroll.com/collections/dyneema-composite-fabric and tape https://ripstopbytheroll.com/collections/thread-tools-repair/products/1-cuben-fiber-repair-tape Mfrs are wary of the lighter grades of DCF because customers subject it to rubbing and it wears through and they demand a refund. But if you make it yourself you won't mind patching it and you'll take better care of it, so you can be brave and use the very lightest DCF. In which case your tent will be one of the lightest ever made. It's the same story with carbon poles.
Theoretically one could make a tent lighter than anything in the shops without any sewing for a reasonable price. Anyone interested? You just buy DCF https://ripstopbytheroll.com/collections/dyneema-composite-fabric and tape https://ripstopbytheroll.com/collections/thread-tools-repair/products/1-cuben-fiber-repair-tape Mfrs are wary of the lighter grades of DCF because customers subject it to rubbing and it wears through and they demand a refund. But if you make it yourself you won't mind patching it and you'll take better care of it, so you can be brave and use the very lightest DCF. In which case your tent will be one of the lightest ever made. It's the same story with carbon poles.