Having learned a tiny bit of Finnish myself, I totally agree with your points. And actually the „controversial” advices b), d) and f) combined with tips like a)

Having learned a tiny bit of Finnish myself, I totally agree with your points. And actually the „controversial” advices b), d) and f) combined with tips like a), c) and h) is very much what popular polyglots like Benny Lewis („fluent in 3 months“) teach for language learning in general if your goal is to actually speak the language.