Do any of you know how the interest on wrinklers work?
One possibility is that it is just a flat percentage return. Like, for every 100 cookies a wrinkler "eats", you earn 105 cookies for popping it. In that case, wrinklers effectively just give an additional layer of +% to your cps.
If, on the other hand, it works like interest at a bank, then the value of a popping a wrinkler would increase by, say, 5% per hour (not accounting for additional cookie consumption during that time, which only provides a linear correction). That would then mean exponential growth, and over the long term the optimal strategy would be to just accumulate 10 wrinklers and permit them to feed for weeks and weeks.