Unfortunately, there are Judges who will order that they will be counted. It just happened with the New York State primary:
Judge orders New York state to count previously invalidated mail-in ballots
“...Unfortunately, there are Judges who will order that they will be counted. It just happened with the New York State primary:..”
There’s a big difference in an legitimate absentee ballot and some non-traceable nefarious mail-in ballot. The later should not even be considered.