New? Everyone at our company starts emails with Hi or Hello, occasionally Folks or Team. Has been the case for the 15 years I've been there. It seems rude when people skip the greeting, as email seems a bit terse at best.
-gen x manager
Honestly OP this is bothering you more than it should be. How much of your life is actually wasted by reading an introductory greeting?
Secondly, this is not a millenial thing. My Boomer secretary is very offended by emails that don't start with at least 2 sentences of what I would describe as chit chat. I don't think that makes it a Boomer thing, just a personality thing.
Are you ok? You seem really upset about something totally innocuous. Also, I'm a Gen-X'er and sometimes start emails with Hi or Hello. Just to be friendly. Especially with prickly types.
Various twenty year olds at my workplace have started doing this and it's driving me crazy. Why are you wasting my time with stupid platitudes and pretending that saying "hello" to me makes this email collegial? Just send me the information you need to in this email and stop pretending you have created some new way of seeming friendly.
It's not rude to just start an email with what you want! JUST DO IT!! STOP WASTING MY TIME!!!
Signed,
Goodbye.
(Seriously, like, does that help anyone? NO! Nobody needs help figuring out that the email is starting or ending, we can tell by the space on the page! Just write the normal stuff you need and let's get this over with for both of us, please.)