Oh please! The Democratic Party has gone so far out of its way in the last couple competitive cycles to engage voters in the primary process and prevent coronation. It’s a pity that the dem primary electorate isn’t more progressive but they just are not.
The gop has been adding “winner take all” states as fast as they can to make sure that they never have a long primary process. They feel strongly that the earlier they can pivot to the general, the better their chances.