You didn't ask for data... You asked: "In what way do cameras make life harder for regular people?"
That requires a specific example, which you were provided with. This reads to me as a pithy response that doesn't want to wrestle with the ways this can be misused.
By this same argument ANY police makes life hard for regular people because they sometimes fuck up, so let's just get rid of police too. What's the worst that could happen.
The general sentiment in the thread is that this is too powerful a technology in the hands of unqualified law enforcement. In the same way that I don't trust federal law enforcement in the post-Snowden era, I don't trust local law enforcement with mass surveillance tools.
https://x.com/jeffmklein/status/1430876370175987712
Luckily we don't have to use the poor as a crutch for this argument. Public camera networks capture everyone sleeping on the sidewalk, regardless of their income level.