People, especially men, are very visual. Most people don't understand how a filter works and the metal endcaps "look" better to most. Wix expecially marketed heavily very successfully on that point and had a big part in the "flimsy cardboard" notion you will still find passionately espoused on the web.
Most passionate Fram haters are ill informed and can't correctly explain to you which way the oil flows, or how an ADBV or bypass valve works. Not a good source for filter information. Truth is there are some actual advantages to fiber endcaps which is why Fram originally patented them, bonding to the media for one is easier to accomplish than with a metal endcap filter. All the metal endcap really does is hold the glue anyway, but they are well known for breaking their glue bond on occasion.
Fram might save a little money using fiber endcaps, but they turn around and spend it on superior filtering media. Even the "lowly" orange can features a filtering efficiency that bests many filters costing much more. Isn't filtering what an oil filter is all about?
In truth I have used more Frams than anything for over 30 years. Never a problem. I have cut a lot of them and no "endcap issues" ever developed even in OCI's over 10k miles. Few people will ever go beyond that.