At least they are honest enough to admit their mistake. A lot of people won't do it because of pride.I know Biden voters, (next door neighbors) I was asking them about it and even they are disappointed in how bad it's been. They were hardcore team Biden they had bumper stickers and all.
I find that amusing that they were blinded and duped but at least they are smart enough to admit a mistake that they were wrong.
The next step you need to take with them is to get them to change their source for news and information. I can tell how someone voted and what their political beliefs are based on their media choices.