I think you misunderstood something. You can export all your photos via Takeout... or flip a switch that makes them appear in your Drive to use more convenient sync tools.

Nice, it looks like they finally enabled the option [1] for G Suite users [2]. It wasn't available before [3].

[1] https://support.google.com/drive/answer/6156103

[2] https://gsuiteupdates.googleblog.com/2017/12/changing-how-yo...

[3] https://productforums.google.com/forum/#!topic/photos/hMeOfq...