I studied two languages as a student - English and my second language Afrikaans. I did them both at first language level. For Afrikaans, we had this thick brown book chockablock full of grammar and spelling rules - and being the great student I was, I knew them by heart (still know most of them, and those that I don't, I kinda apply automatically).
Anyway, this is about English. I remember we also had these rules, BUT each one had exceptions. Tons of them.
I saw this today, and it made me smile. You know that rule of 'i before e except after c'....well have some fun, why dontcha!
Rules? We don't need no stinking rules!
The problem with defending the purity of the English language is that English is about as pure as a cribhouse trollop*. We don't just borrow words; on occasion, English has pursued other languages down alleyways to beat them unconscious and rifle their pockets for new vocabulary.
*original word replaced with archaic synonym to evade the censors
This reminds me of the Upwork BrE spelling test that asked for a correct spelling of 'kindergarten' errrm... n-u-r-s-e-r-y.
It also included 'restaurant' but at least we use that word.