>edit for downvotes: Do not confuse this post for anti-American sentiment. It's an honest current and forward-looking assessment.
I don't think it's "anti-American sentiment" as much as unsubstantiated claims.
Parasite was an excellent film I thought deserves all its praise. But "Korea is starting to sweep the Oscars" is a very different statement than "Bong Joon-ho and the Parasite team swept the 2019 Oscars".
What you're claiming is that American cinema has peaked, and "Hollywood is going to be washed out". A more reasonable statement is "The age of exclusively USA/Hollywood filmmaking awards is over".
I kinda sorta agree with this sentiment. I am a huge film buff, and most of the movies I remember fondly are from the 90s (can't blame this on nostalgia since I wasn't even alive then)
The US had a couple of Tim Minchins back in the 18th century too, and even up to the early 20th century it wasn't that much of a deal in terms of global cultural cachet.
As for GDP terms it only surpassed Great Britain around 1880 and then had its global share peak in 1960. It's been downhill since.
If you have a bizarre, adversarial world where someone else's gain is your loss, then sure. In nominal terms it's been uphill since.