This guy is deluded. People click random things to get more info, and they might not have liked the more info they got so didn’t go ahead with the demo.
Ad nauseam did exactly this until the extension was banned from chrome store: https://adnauseam.io/
If you want to piss off as dev or act like a bot, only then use it.
To load an ad, you have to allow trackers. If you allow a tracker, you might as well allow the ad instead of hiding it. AdNauseam just hides it.
How is this not increasing privacy? The point is to keep my real interests private from creepy marketing departments.
Which is why you block all ads? Companies don't care about 'real interests'. They see the things you click on and show you more ads based on it. They earn money. That's it.
The marketing department knows the sites you visit because it has to serve the ad so this thing can click on it.
Use uBlock Origin.
As mentioned in other comments, his ad spend was pretty low anyway, you can't come to conclusions if a campaign is successful from 11 clicks.
The main problem is that his creative/lander or his copy didn't convert.
Having the clicks differentiate from the ad source compared to your tracking tool is pretty common as well. If you're using just GA to track it, the numbers are going to be wildly different with people having Adblockers.
I've worked on some large B2B ad campaigns on LinkedIn, some of them we only ever got 1 lead, but that lead was worth a lot more than that the campaign budget, so that was a success for us.