Hence the inclusion of the word "often" in the original sentence. There are many different types of strength - just from the get-go using carbon fiber in a sub

Hence the inclusion of the word "often" in the original sentence. There are many different types of strength - just from the get-go using carbon fiber in a sub is insane because (even ignoring the interface problem with different materials) carbon fiber is known for its strength in tension, not so much its strength in compression.