Yes, this will get its day in court, at which point I suspect it will be dismissed. While Ms. Powell sounds quite certain -- that is her job as an attorney presenting the case. What I noticed that she appeared to be lacking is any type of evidence. Saying something is "mathematically impossible" -- particularly when if you have been watching you'd know nothing of the sort occurred -- is not evidence here.
It gets worse when you considered that many of these states, that they are stating this occurred in, are controlled by Republicans. Sure, you can state that the local offices are controlled by Democrats -- but then you run into the problem the recounts will be controlled and run by the State. Additionally, you have the issues that, statistically, the vote counts were extremely similar to 2016 -- particularly when compared to the rest of the state.
I could be wrong, but I don't see the evidence reaching the level needed for the case to proceed in Federal Court -- instead, I suspect this is more of a "Hail Mary."
I've mentioned this before, that it makes no sense. Again, if you are going to cheat to change the vote, you postmark them the day before election day. I can't recall if the cutoff time in PA was 5 or 8 PM, per the original Pennsylvania law, but either way, a postmark of Election Day delivered late is still not valid under that law.
Perhaps it makes sense if you were going to add it to the number of contested ballots, the ones postmarked by Election Day that arrive before Friday -- though those are a relatively small number -- even if these alleged "mismarked" ballots are included in that count. In some ways, it doesn't make sense to me why a Supervisor in a Post Office would risk his job, and his freedom (jail time), to get a couple of dozen extra votes cast in an election with over 6 million votes cast -- particularly when he doesn't even know who the votes were cast for.
If they prove this -- and it seems like they should if true, as there are plenty that should know about it (all the other carriers) -- then I hope he is fired and prosecuted. But with this, at least so far, depending on the statement of a single accuser, I find it hard to give it much credibility -- it seems like others (as allegedly others in the Post Office were given similar orders) would have come forward by now.
As for the ballots, I have said before that I fully expect the Supreme Court to rule that all ballots that arrived after election day -- which would include these ballots that were alleged to be given the wrong postmark -- are not to be included in the vote count. Again, though, it will only effect the total number of votes cast in the election, it won't change the outcome.
One other weird note, why was the affadavit "taken" in Harris County, TX?