I almost ordered one of those last night. My wife and I both have water bottles of various sizes, some that look roughly the size of that Hydroflask that you showed. Some of ours look significantly narrower and still don't fit well, which is the frustrating part. Also, those big ones fit just fine in my wife's Chrysler Pacifica. I mean they're a little bit snug, but they fit. Her Pacifica cup holders seem to be a pretty similar design too, with the 3 puffy things to help hold smaller containers.
When I have one of those big ones similar to your Hydroflask, I put it down in that console area too. I normally keep 2 rectangular Kleenex boxes down in that area side by side. (The more square Kleenex boxes are too tall to fit under the sliding cup holder area. The rectangular ones are low enough to fit below that.) One of them empty and used as a small trash container. When its full I just throw out the box. When I have a big water like that, I just slide one of the Kleenex boxes back a little bit. The other Kleenex box isn't near sturdy enough though to help keep the water bottle upright though. If I bought that divider thing, I'd need to find somewhere else to keep my tissues & trash box.