The announcer didn't reveal much besides the 4 rival factions. Like 3 pages? Out of how many?
One page of poorly introduced exposition dumping is bad enough. its actually 7 pages of exposition, slightly spaced out by action, but it's incredibly jarring. The chapter could be 1 million pages long, exposition dumping still sucks if it isn't done with a lot of care.
Plus, the announcer literally introduced the entire world that they live in and explained the different types of humanoids that live in it as well as what the different factions are after. That's a lot of stuff to go over in such a careless fashion.
I'm just saying that if you can immediately recognize "the author wants to explain to the audience how their world works right now with almost no set-up", then it's not a good exposition dump.