I was speaking with a friend of mine about Japanese, and we come up with a doubt I found no clear answer to: as far as I know, morae are relevant in everyday Japanese, and (at least on theory) each kana should take the same time to be pronounced (small っ included).
On the other end, he (with a C2 in Japanese, and having worked in Japanese translation) was saying that morae are something used to calculate rhythm in classical poetry, but they are not relevant in the phonetics of spoken language, and that when learning the language it's ok to think in syllables.
While I can understand why it's ok to think in syllables, if nothing else because it's easier to understand for people native in languages without mora but with syllable, this conflicts with my knowledge that morae do have relevance in today spoken language as well; I found that morae and syllables are different and counted as such (here and here), and the second answer does state that mora is "a rhythmic unit [used to count] in Japanese poetry", but I didn't find anything about its relevance in today speech, so I was wondering: are morae a concept relevant to the phonetics of spoken language, or something just used for rhythm in classical poetry?