Still, videos on youtube get routinely taken down for using smaller snippets of works.
Your right to quote exists vis-à-vis the copyright holder, not third parties. A frivolous DMCA notice may hypothetically get the copyright holder in hot water, but does not affect your contractual relationship with Youtube. And Youtube does not have to defend your rights for you, they just have to comply with the notification, takedown, and counter-notification requirements.
Article 11 is the "link tax"