No, they are not lying. They are telling the absolute truth.
I know ***MANY*** people who did exactly that - voted for Bill Clinton twice, voted for Obama twice, voted for Hillary Clinton, voted for Biden and are now voting for Trump.
Why?
Trump "normalized" racism and they (the Trump voter) can now - without shame - vote for a candidate who is as proudly racist as they are.
Ask them - they will be more than happy to tell you that exact fact.