'Guys' as a catch-all term for a mixed-sex group was brought into our family about 10 years ago by one of our DiLs, and far from disliking it, I really like it, and happily use it myself now
In common with many others on this thread, I don't usually mind what people call me, as long as it isn't rude.
That said, a workman visiting our home last year kept saying 'oh bless' every time my 70-something OH was mentioned.
The way he said it sounded so b****y patronising that it did cross my mind to say something.
But there was no malice intended. Quite the opposite, and I think the young man would have been mortified if I had told him how it came across.