I have an email forwarder on my personal domain that forwards to my gmail address, and gmail lets me send email as if it were coming from that address. Seems like it's the same result, and they're not blocking that.
I've read a few older books with my kids that contained mildly questionable things, like a boy saying that girls can't do certain things, but I much prefer having that awkward conversation about how things used to be, over tossing it all out and pretending things were never any different.