To be honest, I think whatever Pence thought about the election results is immaterial. First of all, I highly doubt that one man, even the VPOTUS has the power to overturn the election results of any election. It better not be possible, otherwise we could be living in a future dictatorship.
Second, Pence can say whatever he wants, but doing anything about it requires more than allegations. You gotta have sufficient, verifiable proof that will stand up in court as admissible evidence before you arbitrarily overturn an election. That's some serious shit there folks, you gotta have ironclad and undeniable proof and so far that has not been shown to exist. There is evidence of fraud, no doubt about that IMHO, but as yet no one has proved that the election was stolen. Nobody. And that is probably the main reason why Pence did what he did. I believe that Mike Pence is/was an honorable man who did the right thing for his country. And if Trump doesn't like it then that's too fucking bad.
So, let's have the state legislatures around the country do what they can to tighten up our election laws in an effort to address as many of the allegations as possible. It may not be as easy as it was in 2020, tough shit. Nobody's vote is being suppressed, that is a crock of bullshit. Election integrity is of primary importance; as a country we goota believe the right people were properly elected, and right now that is not the case for quite a few people out there.