It's semantics but it does make a big difference. The opinion I heard, that I tend to agree with is that those 'inventions' were not the brainchild of or resulted from the space program. They were not even under contract to be built for the space program. They were put under contract and added to the program to be USED BY the space program.
Would some of these things reached popularity and mass production/proliferation? Maybe not, without funding support from NASA. But that does not mean that NASA invented them or that they would not exist without the space program.
Semantics, I know...
I would be interested in finding out whose opinion you heard.
Fact is, there are millions of parts for the rockets, capsules, satellites that were specifically designed for the space program. NASA was very specific and stringent about what they used - almost everything had to be built from scratch. Manufacturers competed for the contract - in a lot of cases the technology didn't even exist yet.
e.g.
NASA: We need a lunar TV camera capable of operating on the moon that will transmit the signal to earth for nation wide broadcast...
Westinghouse Electronic Corporation: We can do it 'cause we invented a special image sensor that will meet all the requirements.
However, now we'll have to design a camera that can withstand temperature changes from minus 300 to plus 250 degrees F, that will operate in high vacuum, and televise pictures in the glare of lunar day and the earthshine conditions of lunar night.
So, of course NASA would approach a company or companies that have expertise in a certain area, and the final product would have some elements already in existence, but the majority of it in some cases were newly invented.
As an example. Lets say NASA need a screw.
Now, lots of companies makes screws. So they are given the requirements for the screw, they bid on it and the contract is awarded to ACME screw company. But, this screw needs to withstand temperatures of a ten thousand degrees. So the screw company has to invent a new material that can do it. It would not have existed without NASA's need for it.