With having only two hands I do not need some additional Linux laptop, and anyway didn’t changed my two initial thoughts on Librem 14:
Yes, higher resolution screen is not necessarily needed, and in order to really compete there (marketing-wise) all that the Librem 14 needs (even with the 1080/60Hz screen) is to change currently built-in panel to the native 10-bit color depth (10 bits × 3 for RGB) one (although cost would increase, yet this just depends how much add on money is tolerable or probably even preferred/needed feature that might be packaged within Librem 14 at some point of time):
Also, and as we already know, it is definitively not about Linux software driving those, it is about technical numbers that are built-in (or not) within related panel. For example Asus ZenScreen Ink MB14AHD, IPS 14 inch, are at 262K display colors and this might suffice, it just depends on the usage purpose. ASUS ZenScreen GO MB16AWP, IPS 15.6 inch, are technically at 16.7M display colors and ASUS ZenScreen OLED MQ16AH at 1073.7M (10-bit), by manufacturing all three external devices with the fixed resolution of 1920×1080.
Does consumers/customers need some external monitor to keep things here “simple”? Just asking while this opinions might be “unrelated” here (or at least unrelated toward my question here): “In terms of graphics, it is capable of driving two 4K monitors, which will seriously make my day when editing videos!” and here: Multi-Monitor Video Editing – Purism.