It is much safer to generate bogus ballots in a small area. Fewer people involved and less chance of discovery or encountering an honest worker. Anyone falling for this has to have a room temperature IQ.
Except it's my understanding that the way these electronic systems works, it is impossible to manufacture the old "missing" ballot box in the car trunk". The counties either use all electronic or optical scan systems, in which a "missing" machine total or ballots that were generated but not scanned would have been noticed instantly and flagged on election night. As for "fraudulent" absentee ballots, they had to be postmarked by election day, so that's a non-starter as well.
Which is the reason, I'm guessing, Trump and crew aren't even giving this recount a second thought and are pretty much just ignoring it...