There’s always just people that mess up on the form. But they also monitor the sign rate and saw some periods of higher than normal signing in the middle of the night in the EU - indicating someone might have ran a bot to sign with invalid information. The EU only validates the signatures once the petition is closed, so they need a safe margin where even with a significant amount of invalid signatures, they still make it. Afaik 1.2 mil is about what they would expect for a normal vote of this size to be safe, and 1.4 mil is basically more than enough to compensate for any bad actors.



Mailroom aside, if a delivery guy is fine crossing a city with 20/30k people horizontally in traffic, I don’t really see why this is such a bad thing when you break it down.
I count 35 floors, so you can cut it down to ~850 people on each floor after an elevator ride, and a building like this will probably have at least 4 elevator areas sectioning the building almost equally.
So you’re down to about ~210 people after entering the right side of the building, that’s like a big street / small neighborhood (and how far you have to walk should scale closely to that). And with this much people in one area you can really easily batch deliveries. And a delivery place will probably settle quite closely to such a hub of people anyways.