Here in Florida your signature isn't verified against the one you used to register to vote. It's verified against the paper you sign requesting the ballot in the first place. Maybe that's the same where fish is...not sure, but in my state what he's saying is correct.
This is also false.
Link. Do you just make this stuff up?
During the 2018 midterm elections, 32,176 total vote-by-mail ballots were tossed out due to signature mismatch in Florida. A voter’s signature on their vote-by-mail ballot must match a single signature on file, usually from a driver’s license or state ID.
They are supposed to verify your signature twice, once when you sign the form to request your ballot and again when you turn in your ballot.
So first, let me start by acknowledging that I misspoke when I said "here in Florida". Apologies for the generalization. That is inaccurate in this state. All counties here have their own process so there are likely smaller counties who work the way your link says. With that said, this is how it works for us in our county and how it works for those that were in the Voter ID thread when I was asking them about it when we moved here in 2017 (guys from Tampa area, Jax area, Miami area etc) and how it works for my in laws in south Florida. I don't know anyone that doesn't go through this process.
I go to get my license and they ask if I want to also register to vote while I'm there. Of course I do. So I go through getting my license sign the electronic pad to put my signature on my license etc. I go sit down and fill out the form to register to vote while they are getting my license in order. There are a few questions, but the important ones ask me what party I want to register with (D, R, NPA) and do I want to participate in mail-in voting. If I check, there's a box I have to sign (seperate from my license).
At this point I'm on the list to be sent a mail in ballot request form. I moved here in 2017, so 2018 elections roll around and I get the request form in the mail. On it is my information and a barcode identifier that is unique to me and what I use to engage the county website for status updates. On that request form it states clearly that this is a formal request for a ballot to be mailed to (insert my personal info, name, address, etc) and that my signature is consent to send the ballot AND to be used for ballot validation. My ballot shows up and I vote.
On my ballot there is a question for whether or not I want to continue with mail-in voting in the future. If I check it, I'm all set for the same process for the following election. On my 2020 ballot, there was an option that I could check basically saying that I was officially requesting mail-in ballots for 2020 AND 2022. It's my understanding that I will not have to go through the ballot request process for 2022. The ballot should just show up and they'll use my signature on file from this past election for validation.
The entire process can be monitored via the county website all the way from "ballot requested by voter " to "ballot sent to voter" to "ballot processed and vote recorded" that I can track via that bar code I mentioned earlier.
There is a piece of legislation in the Florida legislature right now to get rid of the option to have ballots for two elections and have people answer the question every election cycle. I don't have a problem with that, but some here do.