True. But I don't mind my ISP keeping track of what I do online. When I will mind that, I will use Tor browser to stay anonymous.
So if you don't trust the VPN company with logs of what you are doing online, why do you trust your ISP with logs of what you are doing online, especially considering the ISP know your real name and address whereas a good VPN company would not?
It takes one tiny mistake to disclose your identity. You can make 999 correct steps to avoid being identified and then you make one mistake (like entering your phone number or any other personal data) and your anonymity is gone...
That's not an argument for giving up on anonymity before you've even begun. Quite the opposite, in fact - it's an argument for taking extra care at all times. It only takes one tiny mistake to crash your car and cause multiple fatalities. That doesn't mean we should all drive with our eyes closed.