If it's a simple A or B choice of "slower releases, better quality" or "faster releases, lower quality", then yeah, I'd prefer them to be a few years apart, but the big thing is just how much is put into those releases. A quick development time doesn't always equal a bad game, it's just very common. Majora's Mask is the prime example I think of.
If it's purely about too many games coming out too quickly, and not being able to find the time for them, I honestly agree with that too. I think the DLCs help with that, extending the lifespan of the games we already have rather than making us buy new ones, and I think each generation has always had a fairly healthy length (Ruby and Sapphire released 3 years after Gold and Silver, Scarlet and Violet released 3 years after Sword and Shield) but I do wish each generation could stay longer to make it feel a lot more impactful when the next generation is revealed. This is absolutely just because I was a kid but I remember that Gen IV felt like it was relevant for a long time, and that the announcement of Gen V was exciting because it felt like something new after so long. I'd love to get that feeling genuinely, after a generation that last maybe something like 4 or 5 years, because I think people would be a lot more positive about it.
Oh! And if we do see a Gen X announcement anytime soon, I'd like for it to be on whatever the new console is, I think I'm satisfied with how mainline Pokemon has been on the Switch, and I'd like to see them take the time to keep enhancing the best parts of Gen IX.