alt Hacker NewsI do. But talking about low-level embedded stuff here.
Generally, the more you deviate from your vendors "happy path", the more busy work/unexpected difficulties you will run into, and a solid grasp of how exactly architecture and toolchain work might become necessary (while staying on the "happy path" allows you to stay blissfully unaware).
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I struggle with this deviating from the vendor's "happy path" often. I mostly use the STM32 chips, and I don't particularly care for their HAL library. I find it over complicated and often has bugs in it that I have to track down and fix. But boy is it nice to use their STM32CubeMX program to generate all the low level code so I can just get to work. I tend to end up building my own low level libraries during my free time because I enjoy it and it gives me a better idea of how the hardware is actually working, but using the STM32 HAL library to write my actual client code at work.
+1 to this and your above points (the embedded team I'm on has started using C++ over the last year or so).
I've definitely learned a lot, and I like the portability of CMake for cross-platform use (our team uses all 3 of Windows, Mac, and Linux). My experience sounds much like yours: there've been a lot of times where using the vendor's flavor of Eclipse-based IDE (STM32CubeIDE, Renesas e2studio, etc) would have saved us a lot of discovered work, or extra work adapting the "happy path" to CMake and/or C++.
Using C++ and/or CMake is fine when it's part of the happy path and for simpler things e.g. STM32CubeMX-generated CMake project + simple usage of HAL. For more complex things like including MCUboot or SBSFU, etc, it's forced me to really dig in. Or even just including FreeRTOS/ThreadX, we've created abstractions like a Thread class on top -- sometimes it's nice and convenient, others it feels like unnecessary complexity, but maybe I'm just not used to C++ yet.
One clear, simple example is needing to figure out CMake and Ninja install. In an Eclipse-based IDE, you install the platform and everything Just Works(tm). I eventually landed on using scoop to install CMake and Ninja, which was an easy solution and didn't require editing my PATH, etc, but that wasn't the first thing I tried.