I get what you are trying to explain but this analogy is completely wrong. It would mean that the two subjects are complementary and are often used together which is clearly not the case.

While a JavaScript framework like React can be used to build a company website or CMS, it is often not a good idea to use React to do this.

Off course this is highly context specific and depends on the particular requirements of the "company website". Without a strict definition of what it is, it will be always a discussion about an ambiguous and moving target.

The choice also depends on the technical knowledge and experience. For someone with years of experience with Javascript and really an expert on it, it might be still a smart choice. Or maybe we are not talking about 1 developer but a team of 10 developers etc.

I was just trying to suggest that this is not often the case.