> but there's usually plenty of other sources for information from other people who implemented something using the part

That’s only the case if you use the small (tiny!) subset of parts that everyone uses.

If instead of using some nice and common stm32FXX MCU, you need to work with some obscure Renesas or Fujitsu for example, prepare for a world of pain.

The good thing with web stuff is that you can swap frameworks until one does what you want nicely, and leave it at that. You can’t really change the IC in your board just because the I2C module is doing something weird.