Conservative groups influential with the Trump administration have pressed for the preemptive acts of clemency.
There’s a world of difference between a pardon issues to prevent malicious prosecution for non-crimew and one issued to people you’ve been instructing to commit crimes
I really do wish Trump would try to turn over one of those pardons to chase some made up crimes that clearly fail in court - just so he sets precedence and enables the next non-MAGA government to wipe out his pardons as well and mop up his ilk for every single cent misappropriated (not to mention the lives his regime cost, the treasons etc.)