I've never S'ed a mission on any DMC with out time and effort, nether of which are necessary anymore.
I think it's better this way. Do you think that just because they are called achievements that people should have to put an effort to get them? To achieve anything shouldn't have to take effort, they should be give away, just because someone is better at a game that me it shouldn't mean that I don't get to reap the same benefits as them. In this case, too. Think about how many people actually Platinum any given title, the percentage is minuscule, I myself have only ever Platinumed one game. That's not fair, I paid for it I should get the trophies.
There's a sense of accomplishment to score a SSS on a mission, but now? You can get that same satisfaction without having to work as ridiculousness hard for it. Think about it, if not everyone can do it then they'll just get tired and quit and the game will suffer in the long run. Every game should reduce their difficulty so that anyone can do well on it, it's for the sales. This whole 'only the elite can get these scores' is BS and I, for one, am glad I don't have work hard to do just as well.
Sarcasm aside an easier game has both drawbacks and benefits as an entree point into the series. While it's gotten to the point where you have to screw up pretty badly to score poorly it's a way to train for the more challenging titles and while in this particular dog show the only thing your pup has to do score big is to get lots of style points and not die it will encourage you to try out other competitions where your ugly mutt will actually have to show something more impressive to earn that gold as opposed to other competitions where everyone's a winner, 'cause as we all know, those are for the kiddies. So, is that bad? Yeah, but it's also a good thing.
And, yes, that is how I see this game's take on difficulty, with an everyone's a winner attitude and everything that that entails.