I wonder if it’s a ploy to pressure trump. A few have indicated they expected their legal bills to be paid. If their trial can proceed quickly, there is less valid reason to delay his trial. If he offered to pay their legal costs, it might all slow down as they waive their speedy trial.

Also, if they are found guilty and the case is similar to trump, or the details are damaging to him, it also damages his election chances. So, they may not be as stupid as they seem. However, if the speedy trial is asked for, perhaps it won’t be taken away if they can argue justice is better served to continue with the speedy trial. I doubt it would though. Usually fair is the most important.

Thanks for the explanation. Also helps clarify why it's taken so long for trials to begin - if every defendant can demand "trial within a few months or it's free", of course you'd spend years gathering evidence and perfecting your case beforehand, if you felt you could.