That's not true at all, 3D modeling and animation (aka CGI) is just a tool and not magic. It does make certain aspects of FX work easier but it still skill/talent, effort, and most of all, time. You either rush or try do practical effects on the cheap you're also going to get bad results. Neither one is inherently better or worse than the other, each has its own sets of advantages and disadvantages.
Not true
at all?
I'll give you not
always true (Jurassic Park VS Superman inflation adjusted), but movie making costs have skyrocketed in the past two decades, IMO and CGI has not reduced costs compared to prior big sci-fi films, IMO. Sure, some things are impossible without CGI, but cost and realism wise, I think we might be better off reconsidering more real effects and less green screen. Green screen acting is generally harder to do and therefore poorer as well on average.
The Maltese Falcon cost about $8 million in today's dollars. Casablanca was about $14 million.
The Ninth Gate (hardly an action film) cost $69 million to make in today's dollars.
Raiders of the Lost Ark cost $66.9 million to make in in today's dollars and it was an action film with tons of special effects.
Star Wars cost $74 million in today's dollars.
Close Encounters cost about $95 million in today's dollars.
Superman 1 & 2 are probably the closest to today's insane costs at $200 million adjusted dollars, but that's only approximately what T2 cost in today's dollars.
Oddly, Jurassic Park only cost $119 million in today's dollars. I guess CGI went up after it left Silicon Graphics machines....
Now big movies are routinely costing $200-500 million to make for big budget film. Higher costs mean more pressure, less new ideas and innovation and generally more sequels, remakes and related films that is getting old fast.
I also don't care how great Marvel movies once we're, they still look fake. Raiders pretty much looked real save maybe the face melting guy, but that was funny.
It's more amazing to me how they could make some of the best movies of all time in the Golden Era for a fraction of the cost. Maybe it's because a great story and dialog trump special effects based action flicks almost every time (see Maltese Falcon & Casablanca).