Its my honest opinion from what I’ve learned on here, seen what other notable people say, and from people I have seen struggle on here.
Could you learn just on here? of course, but it would be a lot more difficult imho, and I don’t think you would have a complete understand and good foundation of what you are doing - it would be more imitation because this works and others do it. Again, show me where on FCC there is a tutorial that explains how something works under the hood or similar. You need other resources for understanding of principles and coding mechanics.
As for Quincy, you will see he liked a similar post I made:
As a side note, it never hurts to try other sites out too does it?