Get away from Intel and management engine.
You can't do that with the 16, only the 13 [0] and you can't upgrade ram on it. Which is kind of the problem in a nutshell. Over time fewer user modifications make sense due to the context of the whole computer as an integrated system.
0. https://frame.work/products/deep-computing-risc-v-mainboard
In that lens, the config I played with (before ram prices surged) ended up around $2200 and it felt nice knowing I could upgrade the GPU down the line for $400 instead of pondering if I can last another year or 2 before things fall behind. As long as the chassis and screen is solid I can deal with some compromise for that value.
Even on desktops where constraints are easier, piecemeal hardware upgrades of anything but storage and ram has never been worth it or done much to extend system lifespan.
Edit: though it should be said that what I think is good might be a far cry from you think is good. I did use a Thinkpad X13s as my primary work machine for 6 months, though.
I would be very surprised if many frameworks are upgraded ship of Theseus style for decades, or if the total cost of ownership (and even ecological impact, most of the nastiness is going to be the electronic internals, not the metal casing) is lower than for someone buying a more integrated laptop ever 5-6 years.
for everybody else, a Mac is perfect ;-)
