> Maybe. You only have data on those people who don't have adblockers that block GA. Which is a sizable segment of the internet. Also that they're not using a VPN, etc. Stats collected via GA are inherently less reliable than stats collected from your own site because GA is easily blocked.
You'd be surprised how many marketers don't understand this key point. Those that do just don't care. I'd argue it's part of why the internet is being dumbed down (because people without adblockers are the only ones with a voice).
Interesting point. "our audience is all older people with little education, we should cater to them" -> no, actually that's just the only bit of your audience who let you track them, and you're annoying the younger, tech-savvy people who'd like your product if you stopped being technically ignorant ;)
You'd be surprised how many marketers don't understand this key point. Those that do just don't care. I'd argue it's part of why the internet is being dumbed down (because people without adblockers are the only ones with a voice).