A lot of what Game Freak has claimed about their series has been proven to be little better than PR nonsense and, more recently especially, outright lies, so I wouldn't put too much stock in it. As developers of games that spearhead the largest media franchise in existence, I doubt they have as much creative freedom as other developers...they certainly have to work to tighter deadlines, because if they didn't then we would have gotten a significantly better product with Sword and Shield than what we did. Game Freak's creative freedom goes into titles like Town, not into it's best-selling franchise that has remained relevant by remaining identical to each previous instalment in all ways that matter. The differentiating factors are the gimmicks, and those are little better than pre-release marketing tools. Expecting a new one to replace the old isn't negative, it's realistic. Until I see Mega Evolution and Z-Moves especially return in a new title as a major gameplay mechanic, anyway. Which seems fairly unlikely. This isn't necessarily a bad thing, though. But to call it anything other than a gimmick is to give far more credit than it is due.
Also, I will never embrace monetisation practices of any sort in video games, and I protest vehemently that being derisive of being scammed out of money for content that should be in a full-priced game is "negative" in any sense of the word. Pokemon Home and DLC is outright anti-consumer on top of full-priced Switch games. I don't honestly begrudge Game Freak's repetition of it's more tired game mechanics, either...after all, more of the same sells, and even if I don't like it as much now as I did back when I first played Pokemon, I still get some modicum of enjoyment from the games. But realistically speaking, you have to expect things to continue when they're so positively received by the media and the wider community...or rather, when the sales figures suggest they are positively received by the wider community, or at the very least, that the wider community does not place as much emphasis on them as others might. But it's basic business sense: you're not going to abandon a product that sells when there is a market for it. Expecting Generation IX's games to be any different from Generation VIII's in terms of gameplay and narrative is, frankly, unrealistic.
The video game industry is not particularly difficult to analyse, and neither is the Pokemon series - trends recur, and even slight shifts in those trends do not break them. Game Freak have been making what is essentially the same game since the 1990s, and with their recent embrace of the more corporate practices that have dominated the video game industry for nearly three console generations now, it is not difficult to imagine things continuing as they have: it's what is profitable. Pokemon is not some great mystery that will always surprise and amaze. Perhaps the basis for the region and some of the Pokemon cannot be predicted - although with Pokemon's inspiration being the animal kingdom, going by what has not been done thus far and what is in every generation, you can make some very good guesses - but everything else can be with relative ease.