One day, Avatar will be like that. When the effects grow old there's nothing underneath it to make it good, as it were.
The original Jurassic Park (and Lost World to some extent) is still regarded as a technical masterpiece, especially since it's Dinosaur animatronics are pretty top notch. There was no flashy CGI, just pure mechanical work.
The script may be a bit tacky nowadays, but I still get goosebumps whenever John Hammond says "Welcome to Jurassic Park" with the Brachiossaurases in the background.
Now, if we're talking about Jurassic Park III, I fully agree with you. A CGI crap-fest and with a forced plot just to get the character of Alan Grant back in the series.
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"