A few examples :
- People who can code in a programming language but don't understand algorithms, data structures, and other concepts but 'celebrate' Programmer's Day
- Have a degree in engineering but have professions barely, remotely connected to engineering, yet, celebrating 'Engineers Day'
- People who don't own an iPhone, even if they do, they are unaware of how it is better than other phones or aren't aware of all the features of iPhone but go bonkers about the iPhone 8 event
Facade, pompousness and so on came to my mind but the dictionary definition doesn't match with the above behaviour which is a mixture of ignorance, impatience, falsehood and desperation for an identity, an edge over others etc.