Not everyone has access to fireworks. Next, what would be the point of walking around in circles starring with your mouth open doing nothing, whilst admin is having fun with fire-works? Have you ever thought, how anti-fun would these be to normal players if this happened every map for last 10 minutes?
Also spamming out too much basically ddosses server in it's own way due to cache overload.
So defo no.
It doesn't hurt having a "party" every once in a while, but this would be anti-fun and possibly server crashing.
Also please, the font size, type and color makes this annoying to read