well i'll try again to answer. i think ideally you want them to keep growing as long as possible but still have enough time for all your eventual fruits to ripen.
the bigger the plant gets, the more fruits it can support, but if you deny it fruiting too long that your season ends before any ripen, you will be sad.
so if a type of pepper takes approx 80 days from flower to ripe fruit, best case scenario is to start fruiting maybe 100 days from the projected frost date (because all flowers/fruits don't appear all at once of course).
pinching off buds and feeding nitrogen-dominant ferts are good ways to try and delay fruiting, and then changing to more p-k-focused nutes to bring about fruiting are popular ways to encourage the plant to do what you want.
BUT- i am personally very much of the camp of laissez-faire/hands-off/letting nature take its course. i may pinch off buds sometimes before final transplant, but once they are outside in the beds i let them just do their thing. and of course, the plant can and will continue to grow stems and leaves along with fruiting, so it's not as big a deal to try to "control things" in my opinion. if you are adamant on "maximizing" by taking every effort, by all means do so, but it also works fine if you just leave it be.
(and i could be totally wrong in my thinking, or have bad facts, just giving my opinion here)