Djokovic is still in good shape to reach and win the Wimbledon final. Apart from Federer, all other threats are not really big now. Querrey declined, Isner not relevant that much, Opelka struggling with his serving, NextGen and Thiem unprepared for playing better on grass.There are at least 20 players who can beat current Djokovic at Wimbledon on a good day.
Not claiming that he is that of a favorite like Nadal at RG, but he clearly doesn't have so many rivals on grass. Apart from the Anderson match, I do not remember any player when he seriously struggled to win (injury years 2016-17 do not count here) after 2013.