I always enjoy logging onto a website like this one and learning that a piece of gear I've been using is a total POS. LOL.
I guess like everything else, it all boils down to how you're going to use a particular piece of gear, what's important to you, and what trade-offs you're willing to live with. I will admit to never having done a review on the hyperflow, but I have used one for several seasons without seeing any of the problems mentioned on this thread.
I don't doubt that it clogs with dirty water, but I can't remember the last time I've had to filter dirty water in the Colorado high country where I hike, hunt and fish so that hasn't been a problem for me. If it ever becomes a problem, I've always got some PA Plus tabs on hand, so I won't need to run dirty water through the filter.
Likewise, I don't doubt that it's useless when frozen, but I will admit to never having frozen a filter. In the spring, summer, and early seasons it hasn't been a problem to keep it from freezing, and later on in late October/November I'm normally melting snow on a K-stove so freezing just hasn't been a problem.
It does need to be backflushed, but I can filter 6-8 liters and then backflush (not needed every day) in the same time it takes to filter 4 liter with other filters I've used so I'm OK with that too.
Maybe I'm just lucky.