Good and bad. If they miss a week or week and a half of games there will be lots of makeups later which strains the pitching.
In 1980 our Montreal ancestors led the NL East for most of the season, but in the earlier parts of the season there were quite a few rain-outs, which brought on a rash of doubleheaders late in the season, which decimated the pitching staff and put paid to that season's pennant hopes. (Of course it didn't help matters that the Phillies won just about all their games in September.)