From the description, "keeps beverages...
From the description, "keeps beverages chilled for hours," it sounds like this product would not be appropriate for a 2-3 day remote camping trip. Is that accurate?
You are correct. Soft-sided coolers are simply not as well insulated as traditional hard-sided coolers.
If bulk isn't a factor, consider a cooler designed for marine use. A good marine cooler will hold ice for three days plus. If you'll be backpacking, though, a big rigid cooler would be nearly impossible to pack in. That's how my old Igloo marine cooler got named "Hell on Wheels".