No.
Just as you say, there is evidence that it is beneficial in certain circumstances, e.g. for increasing the capacity of anaerobic effort of the vegans who train for sports competitions, but it is not clear if it is beneficial unconditionally.
Just as you say, there is evidence that it is beneficial in certain circumstances, e.g. for increasing the capacity of anaerobic effort of the vegans who train for sports competitions, but it is not clear if it is beneficial unconditionally.
Moreover, for substances like creatine, which can be produced in limited quantities by the human body, like also for DHA, EPA, choline or taurine, there may be large differences between individuals. Some people might not need supplements for one or more of these substances, at least when they are young, while for others supplements may be indispensable, at least when they become old.
In general, it is much more prudent to take a supplement, even when its necessity is not certain, than to not take it, because in the first case if your choice was wrong it just does not have any useful effect, while in the second case if your choice was wrong it could cause serious health problems.
I have already thought that I should try sometime in the future a creatine supplement, to see if I notice any change, but for now I cannot not see any cognitive differences between present and how I was before switching to an 100% vegan diet.
The literature is abundantly clear on this.