The point is that it moves the needle a bit to the left, just as California has Californicated its neighbors over time.
Similarly look at how Massachusetts has turned a very conservative New Hampshire into a toss up.
Does it move the needle to the left? Perhaps, but the “needle” is not some kind of uncontrollable thing from Mars. We can impact the needle. The entire truth of why they are moving to Georgia can/should/might wake some people up and move the needle the other way.
There’s been more coverage of this kind of corporate move in the past 5 years than probably in all of recorded history before then. At some point, these things can reach a critical mass of information and examples.
Bottom line: there’s no way this is a net loser.