Linearity

Apple stopped pushing security updates for my MacBook.
Now I can never use anything but Linux.

I know my answer is not what you’re looking for but the other two comments should suffice so

Consider IPv6 if possible

White washed (westernised) Arabs do usually speak in a specific language but substitute specific words in the other language
I really hate this though as it causes the speaker to only know each word in one of the language which basically means they can speak neither properly