Not for a minimum of 120 days after the king signs it into law, is what Thai legal experts say about how long laws take to come into effect in general, and then there could be additional delays that are not predicted so I wouldn't count on it happening right away.
Language school sent a message from Kasikorn Bank a while back saying they will not allow ED Visa holders to open accounts anymore either, so something has definitely changed. I already have an account so not concerned personally, but good luck to everyone trying to get one in the future and be advised about that particular avenue being closed.
I was asked to show proof of onward travel by Delta Airlines and Korean Air in 2022 and earlier this year as well. So it's good to have a ticket in case you are asked. You never know.
My wife is Thai and was able to enter Thailand with her Thai passport with less than six months validity, she renewed it after we arrived and it was fine. Just have her do that