I've dubbed this toxic positivity. You find this everywhere in business and tech where people have a vested interest in selling you some fool's gold. Anyone who is sceptic is jealous, envious, a Debbie Downer and so on. The more a business seems to rely on wishing itself into existence the more prevalent this seems to be.

In tech it seems to me like it has become more common with startup culture and with everything being focussed around customers and marketing. I can't imagine someone at Bell Labs would have tought of strong criticism as anything other than necessary.