wat. No, it isn't. I see it almost 100% from young people who live in India. And that probably isn't the right criteria either - it is probably different people within each organization. This is a cultural thing, not generational.
So while I do find it annoying, I also try to be polite back and I certainly won't be putting some "No Hello" link.
If it is a cultural thing and coming from a place of politeness, then I'll engage in a quick round of pleasantries. Once people are familiar, I've noticed this stops.
For me personally, whilst I understand all the reasoning and logic behind it, it does ultimately come across as fake and unnecessary - everyone knows it's fake and unnecessary, but we ritualistically do it anyway, because the alternative is too jarring "we're here for work, lets do the work, and we're done"
Boomers never talk like that.