Hi r1mayer,
This is a typical “marketing” response from a retailer that sells Dunlop. There are many parts of it that aren’t factual.
This is certainly misinformation and there is Talalay latex available that uses 100% natural rubber just like Dunlop.
This is also not true … the primary reason people use Talalay is that they prefer it (just like some prefer Dunlop). They are different not “better or worse”.
You can read a little more about the various different types of latex in this article along with post #6 here and post #6 here.
You have been given misinformation and are being “sold” a story … not facts which unfortunately is not unusual. Each type of latex has it’s own characteristics that are a matter of individual preference.
Phoenix