There's a difference between negativity and constructive criticism. Heck, the writers I hang out with still look for criticism of their work before they submit to publishers because they know that even though they've had work published, there's still room to improve. And one doesn't have to be in the film business to know what works and what doesn't in a film.
Reviews like the one recently posted by jhogan from the rottentomatoes site is an object lesson in how not to write a film review. There, the reviewer was not so much reviewing the film as airing his distaste for Steven Seagal (while declaring himself a fan), and enjoying himself doing so.
On the other hand, saying that every film Steven makes is great, is perfection itself, and so on, isn't helpful either, especially when the evidence points to the contrary. Anyone serious about their craft is always open to hearing criticism about their work. It's what they do with the criticism that counts. Some will ignore it altogether, feeling that they don't need to listen because they think they know it all; others will consider what was said, and though they may disagree, they will still acknowledge that there might be room for improvement.
A bad script is a bad script, and no director given a bad script can make a silk purse out of a sow's ear. Some directors, on the other hand, can take a really good script and screw it up spectacularly. I also often wonder, when I see a movie, how the actors fail to recognize what they are doing when they are saying truly awful bits of dialogue. (Case in point: the after-dinner scene in Attack of the Clones. Oh, ye gods, it was awful: I'm suffering flashbacks of horror and nausea just thinking about it. Bleh.)
Someone reviewing a film - or anything else for that matter (sez TD who reviews short fiction) - who backs up their comments with what is actually going on on the screen and does not allow personal prejudices to colour their review is a valuable resource to all concerned in making the film. That person does not have to have fifteen years of experience in the film industry in order to review a film; all they need is the capacity to understand what makes a good film and what doesn't.
It's actually not very helpful to Steven to say that every film he makes is A-1 perfection, nothing can be improved, he should go on doing exactly the same thing. If he is at all interested in improving his craft, he will listen to those who review his films objectively. The ones who rant on about his weight, his hair and his clothes are the ones to be ignored. The trick is to find the good reviewers who will review the *film* and not allow any personal prejudice against Steven to taint their reviews.
If, however, Steven is not interested in reading objective critical reviews of his films, if he's convinced he's doing everything right and he doesn't need to improve, then we will continue to get sub-standard results. I hate to think of him making so many films in such a short time, with low budgets and second-string directors, bad scripts and no-name actors is because he thinks he's doing a good job and doesn't need to step back and take stock of what he's been giving us. The proof is in the pudding; he does have a loyal audience, people will buy and rent his films regardless of their quality, and as long as he is making some money from these movies, he will not think there is any need to improve. However, if his films will continue to deteriorate in quality, even his loyal fan base will begin to fall off; and then what?
I do give him credit for continuing to work. As has been said elsewhere, how many martial arts/action heroes are still working at his age, in the genre? And yet, 52 or 53 is not so old, except as far as Hollywood is concerned. I think it's not so much his age that is the problem as it is the genre itself. It's changed over the past 10 years, and Steven's style simply does not accommodate itself to the expectations of today's audiences. So either he has to change his style to fit in with the new rules, or he has to find a way to use his existing style in a different kind of story. I'd opt for the latter.
Criticism, when offered objectively, isn't in and of itself a bad thing; nor is criticism necessarily negative. However, constant reiterations of "yes, it's wonderful" and praise where none is due are rarely a good thing because it will encourage the receiver to become lazy, blind and deaf to improving their craft, and careless with their work.
-TD, talking tough love