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iFixit hails replaceable LPCAMM2 laptop memory as a 'big deal'
(www.theregister.com)
This is a most excellent place for technology news and articles.
Laptops with sodimm DDR5 not only use much more power, but they're also slower than LPDDR5.
Ex: the Intel Thinkpad T16 has 5600mhz ram in sodimm form, but with soldered RAM (AMD version) it's like 6400mhz.
Desktops/servers get around this the best they can by just blasting the power away.