A Lack Of Training?

Perhaps they kept failing the entrance test.

https://www.bbc.co.uk/news/uk-england-london-54573750

Literally the easiest entrance test the World has ever seen.

https://twitterwithbraincells.blogspot.com/2020/10/the-price-is-price_16.html

It's not like the clues have been coming in thick & fast for a long time now.

With all the subtlety of a facial tattoo.

https://youtube.com/watch?v=CVirrNiNwl8 (Walla Walla, The Offspring, Official Audio).