Yup. 1st time I've heard that the glass fibers broke into shards and beat up the engine (basically grinding wheel dust) - not only that, wouldn't we have heard about engine wear or damage in the 40 years they've been making fiberglass oil filters? Marketers rarely release truths, so we may never know.
Anyway, I'm fine with "organic"
oil filter media (i.e. - plastic!) except for that little tidbit about melting point of the plastic I discussed before.
And then there's the whole thing with sucking oil out of the ground, making a plastic, and tossing into a landfill.
But thanks to
@06 Dodge for spilling the beans to all of us!