30 aircraft per year is a big jump from the previous years but it still too low. From what I know Chinese airlines need a lot of aircraft to cover their requirements.I suppose you meant this?
Well, first of all, from Hendrik's post it's 1.5 million passengers, not 1 million (The youtube video is a bit dated). From Wikipedia, the number of active ARJ-21 in operation is 48, not 33 as you have so conveniently quote with a lower number again.
The bulk of the increase in the number of passengers and active aircraft in operation comes from the last 2 years, which include 2020 where traveling by air was banned for almost the entire year.
That's why there's bound to a major distortion if you compare these figures with those of the Azimuth where passenger traffic was more evenly distributed in the number of years since in operation and production/delivery of the Superjet was already in full swing.
The production rate of the ARJ-21 is now at 30 per year, which is over 50% of the total number of ARJ-21 that has been built (52), and that is in just ONE year.
There's bound to be an exponential increase in the number of active ARJ-21 in operation and the number of passengers in the coming years especially if they manage to get the pandemic under control and air traffic return to normal.
Hopefully production picks up to cover some of the domestic needs