These are valuable computing skills that should be being taught to future programmers in their teenage years, already. The 'hassle' you claim is really the process of learning that should be promoted, not avoided because its 'too difficult'.
The micro:bit is entirely a specialist computer for which - yes, a basic set of computer fundamentals will be learned - but those same principles are equally attainable with the rPi, with the added benefit that students will also gain operator skills that are vital to their ability to be productive in this field - whereas the micro:bit will leave them with a lot of unlearned essentials.
As a parent (and 40+ years of experience systems-software developer) I would much rather my kids gain their computing expertise with a standard, easily attainable raspberry Pi platform than with the proprietary, not-standard micro:bit. Sure, they'd get some embedded experience - but that is possible with the rPi too.
The micro:bit is proprietary. The raspberry Pi, not so much (in terms of accessibility/availability). I think micro:bit is a step backwards for computer education.