Then Bush did a disservice to the nation, by aiding Donald Trump in the 2020 election.
When one candidate is literally a fascist, hellbent on retaining power at all cost (even destroying the Constitution), the only other option is his most viable opponent.
Exactly
I told a lot of people this in 2016 (which had an unusally high number of third party/write in votes) and they got mad at me
That said, I actually don't believe that Bush wrote in her name.
He told Jim Clyburn he was a "savior" for endorsing Biden, for he was the only Democrat who could have beat Trump. Even Bush's secretary confirmed this
https://www.businessinsider.com/george-w-bush-tells-clyburn-a-savior-for-backing-biden-2021-1Considering how much Trump hates and publicly insulted the Bush family, I doubt they would do anything but vote for Biden
That said, a small possible remains that Bush voted for Condi just because he didn't want to see Texas go blue. Unlikely but I could see that