I think more importantly, most people find the _communication_ part exciting. Listening to 1000h of $LANG language podcasts is dramatically less enjoyable than the sense of cultural connection you get from conversation.
That's all muddied by AI/programmed learning (how much connection do you get from Duolingo?) now but I think the kernel is still true. People largely learn languages to talk, not to listen, it's no wonder things are structured that way and good luck trying to sell people otherwise.
Not if it is a movie or a tv series. Best (enjoyable) way would always be to watch something you like in a language you want to learn with subtitles for a longer term. Things like binge watching won't work though because the brain gets tired and tunes out.
IMO subtitles are not that effective as you brain just stays in read-mode and you don't actually process any of the spoken language. When most languages grammar are not 1:1, so hearing "house red is mine" but reading "my house is red" isn't helpful - more true with real sentences that tend to have more than 4 words in them. Language listening skills require a fair amount of attention and focus.
Though I do think there is value in watching tv series or movies you've already seen in another language _without_ subs. You're able to focus more on the dialog and pair it against your knowledge of the story structure without getting distracted. You can't only do that however, which I don't think you're suggesting. You need to have studied the language to know what words you can pick out/know/dont know.
The brain doesn't engage in the same process when presented with translated subtitles, to such an extent that you're better off watching a familiar show with no subtitles. However it can be helpful to have same-language closed captioning to improve distinction of word boundaries, accents, etc. Netflix has been great in recent years for this, in my case watching German-language shows.
That's all muddied by AI/programmed learning (how much connection do you get from Duolingo?) now but I think the kernel is still true. People largely learn languages to talk, not to listen, it's no wonder things are structured that way and good luck trying to sell people otherwise.