If it is a predictive/dynamic algorithm, it would presume this is the standard use case, and that for the rest of the miles/life the usage will be similar. So it'll limit max speed so that under the predicted usage, it'll be able to keep degradation similar.
In this case the OP use about 300 DCFC per year (I should note the evidence is point to it counting kWh, not sessions, but let's just use this for illustrative purposes). Over 8 years it'll predict it will see 2400 DCFC. It'll adjust the max charging speed to reach its degradation goals in 8 years.
Then another person who will do the same 300 DCFC, but take 4 years to do it (75 per year). In 8 years, it'll only see 600 DCFC. It'll take 32 years to reach 2400 DCFC. So to reach similar degradation in 8 years, it might not even have to limit the speed (or as much).
You can replace years with miles or total kWh, but the idea is similar.
People seem to be assuming something like: 300 DCFC = limited, but that actually makes less sense. A dynamic way would maximize the utility out of the battery.