Democrats are probably happy about this move. They’re probably secretly happy to be rid of Trump and the Republicans.
Democrats are not secretly happy. They are quite opening happy. The entire city council is thrilled. They voted against having the the RNC convention there.
Typical Democrat politics. Decisions made for the good of the Party before the good of the people.
It's not a viable option -- as has been suggested -- to move the convention to a blue state as that governor could pull an 11th hour stunt to shut down the convention due to the virus or some other, similar fiction.