[iostream23]

They picked c++ because it’s a low level capable language that has a reasonably familiar syntax, and their primary training wheels are these simplified arruino libraries.

The actual runtime framework with its “setup” and “loop” methods is a reasonable proxy for an RTOS or the framework an experienced embedded developer would have built as a general runtime system.

There’s nothing wrong with Arduino, except that its SPI SD card library won’t give you good bandwidth but that’s because they wanted it to be an understandable simple access library for SD cards, and you will need to go further if you want reasonable performance.