I remember seeing Elon Musk say that our Model 3 was rated for 1500 recharge cycles. Our warranty is for 70% capacity after 8 years or 120k miles. That hints to me that cycling is the main cause of degradation.
Whether this is all true for Tesla's batteries I don't know. But I would assume that they do count a partial charge as a partial cycle and you shouldn't be penalized for intermittent charging.
I'd certainly try to stay above 30 percent charge as much as possible. And use slow charging, because that's less wear too. So plugging it in every night at home should be less wear than the eventual quick charge from low. Even if the warranty doesn't distinguish these nuances, it's probably easier to manage regular home charging with better results too.
[1] https://electrek.co/2023/04/25/tesla-update-battery-degradat...