This is simply not true. My current Notebook is a 32GB Ram equipped 13" Toshiba Portegé X-30-D, comes in at nearly 1KG and is available with a quad-core i7-8550U.
I'd just like a Ryzen 4800U version of my current machine, even if it means sacrificing Thunderbolt 3.
I think i'll have to wait for 5800U to come around and have USB4 though to see that happen. :(
Unfortunately looks like you got trolled. There's definitely no such engineering limitation. It's primarily, I think, a marketing limitation; if you want a beefier machine, they want to push you towards overall higher end equipment.
That attempts to load a customize page, then immediately 404s. This is one of those moments where I think, "JavaScript was such a poor choice on this page".
Maybe due to space, or could be power constraints. According to little Google Search, DDR4 DRAM consume roughly 1.5W per 4GB(not per module) so 32GB = 12W by itself at least at peak.
DDR4 SODIMM 32GB modules are about $150 right now so you can pop one in if you want and if your machine supports it.
