No, the reason is because many new technologies are dismissed here not due to technical infeasibility, but because posters cannot understand the point or value proposition. When this is happening in response to technologies that many people are using and investing in as early adopters, which provides proof of some kind of value at a minimum, is generally speaking a sign of being out of touch to write it off entirely as doomed to fail, vaporware, etc, because you simply do not understand what people are investing their time and capital in.
For example this comes up continually with VR and AR and crypto, extremely rapidly growing technologies with tons of capital flooding into them. It's one thing to say we can't do something, it's another thing to see entire industries forming around you and tons of capital being allocated and saying it will all fail simply because you don't see the point.