Why is everyone too good to review F2P games??

I understand the argument that it's free... so just go play it. The problem with that is many of these F2P games are very slow in the beginning and I'd really like to know if it's worth it to invest the time (and maybe money some times) to dive into these games. I feel like Polygon did some feature back when Tribes came out but these games are so commonly just brushed over. I wonder if the problem is that the developers are not reaching out or if the sites think there isn't enough interest or what!?! I don't expect them to cover every one of these (feels like an avalanche of them at times) but it would be great to see some real in depth coverage about the big releases. Or maybe I'm the only one interested.