I think its thematically appropiate that Oshaune feels like an absolute cesspit of a planet to dive upon, and be treated like absolute shit.
We went there unprepared, no clue what to find, and its an actual bug world.
Not a planet with some bugs on the surface, but an actual bug world with hive lords roaming around, and flag-knows what mutations are being kept hidden from us.
It is NOT supposed to be a fun time to be around there. But Helldivers didnt sign up for a fun time, they signed up to do their part.