Not true at all. I played all the MH games going back to MH1. The monsters have not really changed without the addition of maybe 1-2 moves over the last 15 years. Most of the games have just improved graphics. All the new games are much easier then all the old ones. They are also heavily simplified, so not really true.
The point I was making was that the Capcom of today managed to fully transition into the high graphics era and basically found their stride, though they initially had to go through the same problems as many of the other studios attempting the same. Every other major studio is seemingly still struggling to climb out from all the stories of dev hell we keep seeing. Although it also helps that their RE Engine has basically solved all their issues in the graphics/performance department too.
What you mentioned seems to be far closer to being deliberate design decisions and subjective opinion rather than a focus on graphics very obviously taking away from resources in other areas of development. Monster Hunter is not typically a series that likes to shake things up too much, and I would know because I play Monster Hunter too.
