I don't know. You tell us what the "incendiary language" and the "controversial" is so we can compare.
You may be right and I'm sure if you were, you wouldn't be grasping at straws and arguing semantics.
But, by all means, carry on.
One if far less toned down when compared in the English language
CONTROVERSIAL
adjective
1. of, pertaining to, or characteristic of controversy; polemical: a controversial book.
2. subject to controversy; debatable: a controversial decision.
3. given to controversy; disputatious.
in·cen·di·ar·y /ɪnˈsɛndiˌɛri/ Pronunciation Key - Show Spelled Pronunciation[in-sen-dee-er-ee] Pronunciation Key - Show IPA Pronunciation adjective, noun, plural -ar·ies.
adjective
1. used or adapted for setting property on fire: incendiary bombs.
2. of or pertaining to the criminal setting on fire of property.
3. tending to arouse strife, sedition, etc.; inflammatory: incendiary speeches.
4. tending to inflame the senses: an incendiary extravaganza of music and dance.
noun
5. a person who deliberately sets fire to buildings or other property, as an arsonist.
6. Military. a shell, bomb, or grenade containing napalm, thermite, or some other substance that burns with an intense heat.
7. a person who stirs up strife, sedition, etc.; an agitator.