Well I'm an English teacher and I count a minimum of seven errors of punctuation, lexis, capitalisation, and grammar in the post you've just made, does that mean I can infer that all Americans who post on forums have poor language skills? I'd argue that I can't even infer that you have poor language skills based on that information. Similarly, your correspondence with UKVI is nowhere near comprehensive enough to condemn all professional people in the UK. Furthermore, I'd wager that American professionals make exactly the same sort of minor errors in their e-mails, why automatically assume it's a British thing? It just seems an odd sort of thing to focus on and a strange conclusion to draw from limited data, that's all.