I think @activpop got it exactly right, you can’t expect a garment, no matter how sophisticated, to regulate the moisture content happening inside of it when in an environment close to 100% humidity, but you can minimize the discomfort with proper layering and the use of aptly placed ventilation such as pit zips.
When Goretex first made it to the market, for me, as an avid skier and all around mountain outdoor enthusiast living in the snow 5 months of the year, as for most of my peers in the high mountain living community, it was a game changer. Not just for their newly developed membrane but also for the quality of the fabrics and the high technical level of construction and design associated with it. It really ushered a new era of technical clothing for the extreme sports and the outdoor world in general.
Nowadays many manufacturers produce equally good technical clothing with their own proprietary membrane and fabrics at more affordable prices but Goretex sill remains the number one recognized name for quality outdoor sports technical fabrics.
The juggernaut they have become, commanding beyond reasonable prices, is perhaps a ransom of their success and certainly due to a very driven marketing strategy but credit should be given to them for spurring the technical clothing industry into more research and innovation that benefits us all.