I see it a lot in our office, I think it’s actually born of a desire to appear slightly more polite, e.g. ‘send it to myself’ vs. ‘send it to me’.
Small, possibly non-existent distinction, but that’s how it comes across.
Personal pet hate is the complete perversion of the phrase ‘I couldn’t care less’ because stupid Americans couldn’t understand it, instead saying ‘could care less’ even though they are trying to indicate that they care so little, it wouldn’t be possible to care less. This one has spread back across the Atlantic I’ve noticed… 👿