If you're still confused how this proves anything, let's review the timeline. In 2018, Avengers: Infinity War is released. This is when Thanos does The Snap and wipes out half of Earth's population.
In 2019, Lil Nas X releases "Old Town Road."
Then, *enter Shang-Chi and Katy singing karaoke* in a bar, most likely in 2023. We know this because the film references post-Blip life a few times, including this scene where Bruce Banner's hologram is wearing a sling.
IDK about you, but knowing one of the greatest gifts to music (and satire) survived The Snap is great news for me, and Lil Nas X seems to be equally as shocked.
I personally love imagining a world in which one year after one of the most horrific events in history, a 19-year-old rapper decided to release a country-rap crossover song.
My only wish now is for Lil Nas X to make a quick cameo in the next Marvel movie.