It's very unlikely that the BSV ATH is going to be breached any time soon.
Only time will tell, if the underlying technology they come up can impress the investors then it is possible, if they could manipulate the price in a short period of time then they can do that in the future too.
Reason is simple - the underlying fundamentals of BSV are going to get exposed sooner or later as complete bogus. The previous rounds of pumps were essentially based on complete misinformation and FUD about the bitcoin network itself. So it's certainly unsubstantiated to begin with.
The main reason of any market movement is speculation and there is nothing that can be done to stop that, it looks like people have shorted the market by billions to see this kind of turnaround in the downside and the speculation was already there when the price started to raise. The fundamentals should be taken into account if they can scale than the rest then that will change the perspective of the entire market and you cannot neglect that.