Every antivirus app is a fraud. I stopped using them about 10 years now, I only use firewall and haven't got any problems. There's also some great firewall apps for Android that have logging and stuff, pretty useful.
AV has its uses, but imo only for tech illiterate people who tend to download random stuff and execute it without thinking about it.
I know people @ Google who worked on related technology, it's not all fraud and they took their jobs rather seriously.
But there is definitely some fraud going on. Virus scanners are necessarily positioned and privileged perfectly for exploitation. You definitely have to be careful with what you employ in this capacity.
Edit: Found this one: https://support.virustotal.com/hc/en-us/articles/11500214654...
But it's mostly a scam. Unless you really go for dodgy apps, it's all fine.