Those are the real emotions of the people at Blue Origin watching the launch. They've been working toward this moment for 24 years. Should they censor themselves because their "excessive" emotions offend you? Or maybe they should hire newscasters to do an disinterested presentation up to your standards, instead of employees who actually worked on it?
That's not a video of live broadcast TV coverage. It's a recording of the operational communcations (which you could hear in the BO livestream and it didn't have crying or shouting). Actual TV broadcasts at the time did show some actual emotions including laughter and possibly even tears, despite being from professional newscasters rather than employees: https://www.youtube.com/watch?v=oMF58ZP681A
> from professional newscasters rather than employees
Then it's not relevant.
But you hear no crying or shouting during e.g. Moon landing [1]. TBH I expect "disinterested" behavior from professionals in such situations.
[1] https://youtu.be/xc1SzgGhMKc