it's pretty clear that judges are getting exasperated with the trend of corporations suing thousands of individuals at once
That's not how law works. If there are 100 identical cases and the first one has a certain decision then, unless appeals are involved, the rest basically inherit the same decision by precedent. There's no point at which a judge can get tired of doing his job and change his mind on the verdict. And you could really only argue abuse of process if the plaintiff is losing every time; if they're winning then what are you even talking about?