Ah.

I mean.. yeah, it was a nice moment for the song, but my reaction to that is more mellow than most I reckon (if "everyone" only noticed the show then because of that scene). I've found the show consistently enjoyable and good to watch, with many other scenes being cool with matching soundtracks (Zenitsu cutting the other spider fellow in the web-hut, Tanjiro finishing his training, only find out at a later fight that they were dead remnants of his senpais etc).

The undermining of Tanjiro's efforts... I kinda get why they did it. The writer wanted it to be cool and all, but then really Tanjiro shouldn't be able to kill even lower moons at his level right now. I say that, despite him actually killing one in the movie lol.