Hi ok11,
No … the specs on this mattress are much better and there are no obvious weak links in the design.
There is more about gel memory foam in post #8 here but the fact that it’s 4 lbs (which is generally more breathable than higher density memory foam) and with the incremental improvement from the gel it would increase the chance that most people would be in an “acceptable” temperature range although some people may still sleep warm on any type of memory foam. Post #2 here also has more about the many other factors that can affect sleeping temperature (such as your mattress protector, sheets, and bedding) that can also make a difference.
Phoenix