It sure hasn't been confirmed. After it came out, I thought "Time will tell." At this point, time has told.
If you do a search for “2000 Mules” and read some of the “fact checks” that purport to “debunk” the documentary, they are wholly fraudlent. As I said in my post above, most of them spout things they read in online news reports.
The one example I saw was an article saying the Georgia Election Commission found no evidence of fraud.
Some people might believe that. Some people are ignorant, stupid, or ideologically driven, so there is that.
I have a reasonable understanding of the technology, and I would be ready and willing to discuss the methodology and findings with anyone who wants to debate.
What I have seen, though, is nobody wants to actually debate it. They want to “debunk” it, throw spaghetti at the wall, ignorant or stupid people see the “debunking” and just classify it as “Oh. I guess “2000 Mules” was just a partisan propaganda piece by people who didn’t want to accept the results of an election. What’s for dinner?”