Well for me the point at which it started to become clear was v.130, so about a year and a half ago. The beginning of the end. Dylan's POV in the Yoga event two updates previously could be written off as a playful experiment, but with the inordinate amount of time that task #3 and the park event took, with some not even being able to play the park event due to coding mistakes and the lack of foresight that Android players might have trouble with the minigame, clearly showed L&P that he could take his sweet time with updates, and people would still lap it up.
It's hopeful now that with the criticism finally being noticed on Patreon, something might be done about it. Like I asked about the .155 update, is the amount of time it takes worth it? I think people are gradually started to believe it's not.