I think it got migrated because 'Makers' (Raspberry Pi, et. al.) and 'EEs' are two completely different gamuts. Like a sniper and a gunsmith - the sniper may be very good at changing scopes, magazines, and rounds, but they really have no business asking the gunsmith how to mod it to fire automatically.
Makers are users of technology, where as EE's are creators of technology. Some makers learn just enough to plug board A into board B without it blowing up (in one day), whereas EE's spend months, years of their lives designing boards A and B. Makers learn that an output cannot be connected to another output the hard and fast way, while the EE's that designed those outputs carefully favored high-speed, low impedance over circuit protection. In short, the EE's have dealt with (read: cried, pulled hair out over) the hundreds, thousands of nitty-gritty details, whereas the maker doesn't care about these at all. The OP clearly asks for a plug-and-play solution to a complex problem; so not wanting to put in any effort to understand it themselves, it was "swept under the rug." After a few dozen such questions, it becomes easy just to sweep anything with "R Pi" in it under the rug.
I think the answer to whether migrating this specific one was right or wrong, will depend on whom is asked. Of course the asker wants it answered, but the answerers don't want to be bothered. As a site rule though, it should not have been migrated. (It likely would have then received the standard barrage of "What have you tried so far?" and "We don't do homework here" kinds of comments, then closed as off-topic or shopping.)
Now I suppose it's possible to 'learn electronics' from the top-down, but there are two issues with this: 1. The Maker may not even care about the lower levels. If they do, then great, but they should research the lower levels first. 2. The EE definitely was not trained this way, and may insist everyone else learn the fundamentals first like they did. In either case, we are not a complete EE degree education institution here, and cannot be expected to answer such questions.
Dave Jones had a nice video about insisting makers learn the fundamentals so that they were not completely lost, however I can't find it now. It may have received too much flack and been removed. (Imagine that.)