This is a very contentious issue within PE as you have seen yourself in your research (thanks for doing research
). Some say that it does not affect their PE progress at all, while others strictly advocate a no-cum policy. Others lay somewhere in the middle (such as myself). If I cum daily, or multiple times in a day, my EQ will drop, I will get a lot of turtling, and many of the NIs you can get. I have found that if I cum once every 2 or 3 days, it leads to a way more conducive edging session. Especially if I edge more than once a day.
Others claim that the opposite occurs for them, that if they DON'T cum every edging session, they experience NIs.
See what works best for you with your edging as there is no hard and fast rule really. See how your PIs are from both methods (cum every session, cum no session) or if the in-between is better (every few days).