Being a speaker of several European languages, I'm always getting upset when I see people are using certain loanwords ignoring accent marks:
Sending my resume for your review;
We went to cafe;
The naive algorithm performs worse than an optimized one;
The Schrodinger's Cat phenomenon;
The Citroen car;
The rationale is that the accent marks are not random. Their role is assisting pronunciation, and if they are omitted, it makes a different pronunciation. In some cases, it will make a different word. Not to say that some may feel offended if their name is written with a mistake.
My questions are:
- Is it grammatical to skip accent marks in loanwords?
- Is there any special treatment for proper nouns?
- Is it a good excuse that the keyboard layout may not have accent marks?