Lol, the English as a second language thing always cracks me up. English is MY second language. I have been speaking it 20 years or so now though. I don't think it shows TOO much in my writing :P
I think if anything, the language issue is more of a crutch. I mean sure, if I am speaking to someone, and not taking my time, sometimes things come out wrong. I think in french, then try to translate, and the direct translation sometimes comes out completely off. It's more than understandable, but I've gotten funny looks over my grammar once or twice, with word choices or sentence order. Writing though, completely different. You have time to sit and think, look over what you wrote, and edit. Not an excuse.
This nurse probably claimed 'ESL' more to imply discrimination on your part as opposed to a reason for her writing issues.
I will also MORE than agree with other posters that this is a result of the 'wussification of America' as one of my favorite morning radio shows refers to it. When you tell kids over and over again that they are amazing, can do no wrong, they grow up closed off to constructive criticism. Heck, when I was in school I didn't get a medal for anything if I didn't win. I might get a participation ribbon, but no medal. I grew up knowing that there are things I am good at, others not so much. It didn't affect my self-esteem much to know that I suck at soccer or will never win any long distance races lol. Not winning either lets you know this is something you need to work on if you want to improve, or to move on to something else if you don't care.
The next generation is gonna be a bunch of pansies, and I am scared of what the future has in store for us with all that