Run the numbers.
150,000 fake voters out of 781,000 is about roughly 19%.
There are a little over 200.000,000 registered voters in the USA. 19% of that is 38 million. 38 million????
Don't confuse bad registrations with voters.
I've been registered to vote in 5 states and DC and never made any effort to notify the SoS when I left the state. There's no telling how many states I'm still registered in.