The vast majority of CG is replicating stuff like set design or replacing a location shoot. We don’t usually call that an “effect” when it’s not done with a computer. And even then… it continues to deliver “bad matte painting” often enough that spotting such failures in the wild isn’t hard (nor was it hard with bad matte paintings!)
[edit] my point, anyway, isn’t that any given effect is better. It’s not even necessarily that the movies are better (The Passion of Joan of Arc barely had effects at all, and didn’t have synced sound, for god’s sake, an it’s incredible—of course CG-having movies can be great) but that I tend to find the overall effect of those movies better. Those “seamless” mundane CG effects shots of things like composited computer-generated rooms or streets rarely get the kind of attention a real set does, and the movies suffer for it. Nobody had to move around the space with their real body and think about it, and it usually (usually! Not every single time) shows, if not in anything wrong, exactly, then in the degree to which it’s perfectly forgettable and fails to contribute anything but filling screen space.
[edit edit] more to the point, peak practical wins at convincing effects in the Big Damn Action Moment. But only peak, and that was a tragically brief span. Point me to a CG sci-fantasy space fight that looks better and/or more like a real thing that’s happening than the battle above Endor in return of the Jedi (you’ll notice I didn’t pick the earlier two movies, as Jedi is where they really perfected it all—though even the first has some shots that are quite convincing!). Like truly if you know of one I’d love to see it. I never have. They all look plainly computer generated. I’m not saying every frame of those SFX shots in Jedi is perfect, but it looks overall more real than anything similar I’ve seen done in a computer. Like you’d think in about 40 years it’d have been surpassed multiple times, but no. They all look CG.
Or, like… put the best 50% of practical shots in Jurassic Park against the best 50% of CG-heavy dino action shots in any Jurassic Park from 3 on. They’re more convincing than any of the CG shots. (Some, from the field of all practical effects shots in the film, are not convincing! But a hell of a lot are, and not just better than the median CG effect in later JPs or something, but better than all). We struggle to touch the tippy-top peak of that craft with computer effects, still today.
The vast majority of CG is replicating stuff like set design or replacing a location shoot.
Says who?
We don’t usually call that an “effect”
Who is "we" ?
This is basically going from "CG is bad" to "not all CG" to "that's not an 'effect'". These arguments never hold up because any explanation ends up full of holes and inconsistencies.
Usually it just ends up being a variation of "I liked the movies I saw when I was a kid". Most of what you're saying here is just that you liked an old movie.
People have been making the argument of 'models look more real' since the 90s, but when it comes down to it, they don't know what is CG and what isn't and can't tell the difference. It's a combination of nostalgia and thinking they know better when they aren't actually being tested.
Then there is the fact that shots in modern movies can't be made without CG. You can't do the same things with models and have the camera freedom, long shots, wide shots etc, and that's just hard surfaces.
Saying "I love this black and white movie, therefore CG is over used" is an opinion that most people would never hold and a connection that doesn't make a lot of sense, but the a cold hard fact is that the same movies can't be made. Eventually seeing a half second jump scare of an alien is going to get old even if the man in the suit looks good.