No, not really. Xiaomi gets feedback from their customers. Jolla does not have a product yet, and this forum is not representative for the people who will later buy the device. It's just a small, but in parts very vocal and demanding group. Trying to please such a highly critic audience during product development would be a safe road to disaster, as there would always be someone who's not satisfied because his special needs are ignored, and who's going to express his anger. The Xiaomi approach is very interesting when you know your customers and their needs, but Jolla is jumping into cold waters in this regard atm, they just have to hope people will like their product.

Btw, stalking them on twitter is not constructive feedback. Let them just finish their product, they have no obligation whatsoever to give out further product specs or details about their plans. When they do it's great, if not, don't harass them, it just keeps them away from more important things, like coding or, probably, sleep.