Basically, with the old rate limit system each request would use 1 of your rate limit, and ~1 minute later it’d go up again. So if you were to use your max rate limit over a minute, you would go from your max down to 0 and then start to ‘regain’ at the same rate you’re using them so would stay around 0.
The way it works in the new system, you’re constantly regaining rate limit (up to your max). So the 800 default bearer token limit allows for 13.333… requests per second. If you use exactly that limit you’ll hover around 800 as you’re using them the same rate your getting them. If you use more, the rate-limit-remaining will decrease, and if you use less than 13.333… you’ll go back up until you reach 800.
TL;DR - It is correctly 800/min, but because of the way you regain your rate limit now if you request the same amount as your limit you’ll be hovering around 800 limit remaining still, and only dip lower as you use beyond your limit. This allows you to more easily ‘burst’ requests for short period, which could have previously caused you to exceed your rate limit.