Hi jsamson,
You can see my comments about the Sleepopolis Site (and many other similar so called “review sites” which are really just revenue sites that know little about mattresses or mattress materials) in post #11 here and in posts #4 and #6 here but the good news is that you ended up buying a great quality/value mattress in spite of the somewhat questionable information there.
Most importantly … congratulations on your new mattress 
Phoenix