You're not wrong... but, there are scenarios where, for example, a designer comes up with 4 proposed designs, all of which are good, and someone need to make a decision as to which one to go with without any meaningful way to differentiate. This algorithm allows all 4 to be approved as "functional and not embarrassing" and put into place.
And yes, 2 years later, you might decide it's a good idea to hire a designer to freshen things up, and have them deliver you a few more designs. But, with a pattern like this, you don't need to discard the old ones... you can add the new ones in amongst the old and have the algorithm elevate the one that is popular.
But the real gem would be to find out that the design that was least popular 4 years ago is actually in better sync with what is stylish now, more so than the ones you paid for 6 months ago, and have that dusty old design automatically leap to the front of the queue without you even having to think about it.