I disagree with this last statement. . WGs are are all individuals, some of which fit your stereotype, some which do not.
As in any business, some providers are clever, well organised and reliable whereas some, like the WG in question, are shambolic and couldn't organise the proverbial piss-up.
Sadly, some that are good in the sack are also lousy organisers e.g a Ruby Red Head. Lovely lass; useless organiser. If I am let down I move on. She comes off the Hot List.