This file is really a ".raw", i.e. without any metadata. Note: 3872x2592 pixels x 3 byte make 30108672 bytes, which is exactly the file size. Of course there are some other combinations, like 1936x2592 pixels in 16bit depth, but PS shows, that it is really 3872x2592, 8bit.
What you really miss now is the color space; the file does not say anything. If you load it is PS, it will be interpreted like your working color space, which is probably sRGB (check it out). Judging from what I see, sRGB is correct.
Re your original question, the "raw flexibility": that is gone long ago. Hopwever, you can load it in ACR via LR or Bridge and change the WB if you want to; it is not necessary, judged from the shirt of the guy at the right. Otherwise, do whatever you want to in PS, there is nothing to gain any more.