Eh, there is something to what ShadowFyre said. The Monsterverse is quickly losing its internal consistency.
in 2014 it was "monsters are real, humans are basically helpless".
Kong Skull Island was "monsters are real, and this one is weak as hell"
KotM then was suddenly like "ORCA, OXYGEN DESTROYER, TECHJET, FLYING FORTRESS, DEEP SEA RESEACH, GODZILLA RADAR", which is my actual biggest complaint with the movie. The kaiju no longer pose a realistic threat to humanity in the wake of KotM, it's like "Holdo maneuver" all over again.
And now GvK expects us to believe a species that was wiped out by mooks and vulnerable to gun fire is a rival alpha to Godzilla's species, and not only that, but the sole answer to Godzilla in a post-oxygen-destroyer world. Just oxygen destroyer godzilla, problem solved. There's no need for mechagodzilla or big monkey. Also mechagodzilla, did we build this? A robot that can fight kaiju?
As it embraces the showa-era silliness it loses the logical credibility and my suspension of disbelief becomes weaker. If the introduction of tech had been slower and better explained it wouldn't be as much of a problem. Or at least if they didn't have literal kaiju mind control and the oxygen destroyer on speed dial.