[chrischen]

Doing things with react is mutually exclusive with SPAs. You could even do a purely server-rendered website using react on the server if you wanted to, and all the benefits of functional component design can still be utilized.

[TeMPOraL]

You probably meant "orthogonal" (a smarter-sounding way of saying "perpendicular", in the sense of "linearly independent"). A framework made and used primarily for doing SPAs can't be "mutually exclusive" with doing SPAs.

[emteycz]

Maybe they just wanted to say "isn't"