This is sort of a weird complaint to have, since "cool" doesn't at all have the connotation of "robust long-term support"; in fact it's almost the opposite, since being "cool" is a more in line with things like "move fast and break things".
That doesn't mean that backwards compatibility and long-term support isn't a good thing for the consumer, but it really has nothing to do with the concept of "cool".
That doesn't mean that backwards compatibility and long-term support isn't a good thing for the consumer, but it really has nothing to do with the concept of "cool".