It's an inherent flaw with the patreon model. Without checks and balances in place to ensure content is delivered on a regular basis, it won't ever be delivered on a regular basis by a successful patreon. Just be glad that DC and company deliver worthwhile updates. Milfy City released one complete update last year and it took three attempts to do it, before ICSTOR wimped out on making the game. The team making Innocent Witches puts out one update every two to three months and there hasn't been a worthwhile update in three years. Amity Park puts out solid updates, but does so at an even slower pace than Summertime Saga. Something Unlimited updates roughly once every nine to tend weeks with five minutes of content. Even the best games on Patreon still release only a few minor scenes every couple of months. A couple of my favorites I forgot existed because they haven't updated since the middle of last year. Until Patreon forces its users to adhere to a proper content release schedule we will never see an improvement on this front. Patreon users are encouraged to waste time and DC is far from the worst offender.
DC and co make take their sweet ass time, and they could definitely afford a few new members of the team to get content out quicker, but ultimately most games can't match Summertime Saga for quality of content even if they beat it soundly with quantity. There are a few that do, but Summertime Saga is better than the norm. WHich is kind of pathetic if you think about it.
Aaaanywho, pooorn time.