I was also a bit taken aback by this post when I visited the linked website. The first thing that crossed my mind is whether the OP was simply bringing this option to our attention, or whether he also has an interest in the vendor. People with commercial interests in the products they recommend to others should declare it on principle. Then, whether those messages are allowed here is not my area.
Setting that aside and turnig to the technical aspect of the issue, there are many people using third party materials some of which make claims to considerable longevity and come from trusted sources. For example, I don't think for a moment any one would question the quality and integrity of Jon Cone's products. On the other hand, Henry Wilhelm has written pointedly on the potential risks of using variious third party materials, and any one who doesn't take the results of that research into account will get what they get and shouldn't be surprised if some time down the road they end-up disappointed. Another case of caveat emptor, and where it can be expensive to buy cheap.
(Note I edited this post just after posting it to clarify the distinction between trusted third party materials and others which Henry Wilhelm warns about.)
