Not really. Voting is by machine in Pennsylvania. They have no paper record of the votes. They may recount the numbers on the machines, but it isn’t going to reveal anything new about the people who voted. They take the signature of who showed up to vote, but I doubt those will be looked at in a recount. Those would only be looked at in a court challenge to voter eligibility.
This statement is false.
This is no statewide voting standard in Pennsylvania. In my precinct, where I have been both a clerk and judge of elections for many years until recently, we have optically scanned paper ballots which are retained.
They may recount the numbers on the machines, but it isn’t going to reveal anything new about the people who voted.
There are many places where a hand-count is available.
They take the signature of who showed up to vote, but I doubt those will be looked at in a recount.
They might very well be looked at in a recount if the triggering event was not an automatic recount, because either the county board of elections or a Judge would need some evidence of fraud in order to grant the petition. (You're correct that it wouldn't reveal much except in very egregious cases, where ALL of the clerks, ALL of the judges, ALL of the poll watchers and ALL of the attorneys would have to miss glaring errors.)
Those would only be looked at in a court challenge to voter eligibility.
They would not be looked at in that case unless the ballot cast was provisional. Otherwise, challenging a voter's eligibility would reveal nothing. Where (if it isn't absentee or provisional) is the ballot belonging to voter X?