Here's my conspiracy theory:
Sunak ordered this.
Now any time a clip of him saying something shitty comes out they can claim it's another fake. Before anyone has the opportunity to refute that, we have been moved on to the next thing. These ads got put out and made intentionally obvious so they would be found out easily. No real scammer is making 140 different adverts on just Facebook. They make one and get it on as many sites and ad networks as possible before anyone catches on and shuts it down. The more places it exists, the longer it takes to be removed from the internet.