All I can say is watch the hearings in their entirety and make your own minds up.
That last clip wasn't great as it didn't show the whole testimony, that clip is the last of her testimony andd her her reaction to a Democrat State Senators response to it.
Incidentally the approach of each State has been very different. Pennsylvania was largely positive with no real response, the State Senate reaction was to close until January. Arizona was a stronger reaction, but the arguments put forward were much stronger and Michigan was playing along, but only gave everyone 3 minutes and would only say that, as legislatures, they only wrote the law...
In Nevada, the courts won't hear the cases without 'evidence', yet the same courts won't allow access to the State data to produce the evidence to corroborate the claims. This is why it is only testimonies that are being heard.
There are similarities to the complaints in the contested states and most of the 'discrepancies' are in a handful of counties, and to answer another point, in two counties in Arizona, there was a vote dump of 35,000 votes per candidate for ALL the Democrat candidates across the ballot. This was substatntiated by three different independent expert witnesses with proof that could be corroborated by a foresic audit of the machines.
In both Nevada and Arizona, they had to reduce 15 cross checks of signature verifications on the postal votes down to zero because the machines couldn't accurately compare the signatures, effectively rendering those votes void as they couldn't be verified. This didn't stop them from being counted though. Not baseless accusations from a lawyer or two, but actual sworn testimony from the people there who saw these things happen.
It's not about tens or hundreds of discrepancies, but rather tens and hundreds of thousands which matters when some states only have a margin of 10-20 thousand.
This is
If you only watch one hearing, then the Arizona one is the most interesting.