Why not?
Also, Alabama's recent streak makes it clear that anyone who thinks Doug Jones could get re-elected is delusional.
Yes, Jones was elected by a fluke, in off-year special election, against the worst possible candidate, who still lost by a hair. And if the Senate control was at stake in 2017, we wouldn't have Republicans casting protest write-in votes.
I'm pretty convinced that even if Moore is somehow nominated again, Jones is a toast in a regular election, especially with Trump at the top of the ballot.