I have seen apps that choke on much more common names. Like O'Brian. This post is a classic on various name issues: http://www.kalzumeus.com/2010/06/17/falsehoods-programmers-b...
Tangentially related (rule 9); my girlfriend's surname contains an 'é'. I have yet to see a year go by without receiving mail having 'é' on the address label where the é should be. Explanation: echo "é" | iconv -t utf8 -f iso8859-15 We're Dutch, and the é is part of our language, and even part of the legacy character encoding standard everyone used before Unicode's widespread adoption. This is just a matter of code…
Much like the printing press, I'm 100% certain that the computing (and the internet specifically) is altering human written language across the world.
It is just so much easier to avoid anything outside ASCII because you can be certain ASCII will always work - even though some awful MS Access -> CSV -> SQL -> SQL -> Excel -> SQL -> COBOL ETL pipeline. No matter what version of any software is being used.
Technology has always shaped written language and we should fight to do better but at this point it seems inevitable.
(To be clear: I'm not saying this is a good or desirable state of affairs)