Maybe it's just me but I never really trust those sudden bursts of writing. Every time I've done that, the idea fizzles out again after a day or two. It feels more like finding leftover energy in a dead battery than actually fixing the story. I've learned to be pretty skeptical of my own excitement over a single good session. The real test is if you can open the file again tomorrow and still want to work on it.

Reminds me of a buddy who worked a clean site for almost two years. They got a big safety bonus and the next week, a guy got his hand crushed in a press because everyone got sloppy. It's exactly what @felix147 said, that number makes you stop seeing the danger right in front of you. The streak isn't a shield, it's just a count of days you got lucky while doing things right.

Still just a soulless shortcut.