That is just talk as of now.
It would depend upon how it played out. If Bernie were to be found guilty of the allegations, but if there was no fall out to the program in terms of impact on Jimmy, NCAA penalties, etc, then it would probably not affect the decisions of those kids.
However, if further revelations brought down Jimmy and/or resulted in penalties/sanctions, well then, let's not kid ourselves. Those would be big factors in any kid's decision and rightfully so.
If the most likely outcome occurs, ie, not enough evidence to totally absolve Bernie, but also no definitive proof of any guilt beyond the current accusations. And there is no direct fall out to Jimmy or the program, then it would probably not have much impact on recruiting, especially as time goes by & it gets out of the news.