Not to burst anybody's bubble, but "applications for such ballots and envelopes on which the executed declarations appear" is not the same as "ballots and envelopes". This essentially just says "ballots, files, applications, information and lists" need to be stored for 2 years.
Please don't. Cali is a manufacturing plant for disaffected Republican voters who routinely leave and help secure other states. Doesn't matter how blue Cali itself gets, their electoral votes can only be lost once, and that ship is long gone.
Remember that it's possible to win the election with as little as 23% of the popular vote, just gotta keep repositioning red votes from places like Cali, where they don't matter at all, to areas where we actually make a difference.
Even if the explanation is true, want to bet the "reminder to click upload" only went out to blue counties?
A Cali refugee is 3x more likely to be republican than a democrat. For as long as the electoral college exists, Republican exodus from Cali is a good thing. Those voters contribute to victories elsewhere, and it doesn't matter if Cali goes 100% blue - leaning even heavier blue doesn't get them any more electoral college voters. Let it become a distillate of pure leftists, until it destroys itself.
Also, we have no reason to believe the same cheating wouldn't be repeated. What we need is a whole new system. Personally I think we could use a national ID with an attached anonymized identifier that only you know. Cryptographic signing of your vote, with a fully transparent database where you can later look up your vote and verify that it actually counted. Hell, let people vote whenever they're ready, and change it if they want, up to a deadline where the winner is announced. Strong cryptographic signatures, properly implemented, are presently impossible to beat. We could end identity theft in this country at the same time, too, if we wanted to.