They insisted whether or not is proper usage, period Or is it a phrase created by continental english speakers due to the influence of their native langu. Over time, language evolves or erodes and the rules change, which really means.
Brigitte Lahaie, le programme de la semaine
From 1845 to 1883 bb meant brigitte bardot
It was changed to mean ball bearing in 1883.
I saw emails from english people with many thanks as a signing off phrase
