What I dislike about rec kayaks …
is that the manufacturers do not include flotation bags and then sell thousands of these large open cockpit, no bulkheaded/hatched boats to an uninformed public. At a minimum, rec boats should have a rear bulkhead and hatch or be sold with with flotation bags for the rear.
I have had to rescue a few kayakers with flooded boats in the past and I also routinely demonstrate how difficult it is to rescue a flooded boat when I instruct. It is damn near impossible to empty water from a boat with no bulkheads or float bags. It is usually eye opening when we demonstrate these rescues in the pool. With two or three people helping it can be done, but I see far too many kayakers in recreational kayaks without flotation crossing large lakes, either by themselves or with one other paddler.
If you are designing a new boat, my recommendation is to include a rear bulkhead or include a properly secured and fitted float bag. The additional cost to the manufacturer and to the end user is minimal.