Yeah, this. It was a satire of both America and of 50s and 60s science fiction. the dated tanks and vehicles shooting ineffectually at the aliens/monsters/whatever is a standard, the scientist who translates the alien language and is convinced they'll elevate us to a higher plane of existence, the completely bizarre celebrity cameos. The two kids who get hold of alien guns and start blasting things is a bit of an homage to 80s kids on bikes sci fi movies. The final resolution of the yodeling song making the alien's heads explode is tied to plot resolutions where some random mundane thing ends up being the undoing of the invaders, which goes all the way back to The War of the Worlds by HG Wells. Plus all the celebrities were popular at the time and it was fun watching them all follow the silly B-movie script and get blown up and disintegrated while hamming up their lines.