Mark Ruffalo Slams Kevin O’Leary Over Billie Eilish’s Grammys Speech: “Why Don’t You STFU”
Mark Ruffalo has jumped into the heated debate surrounding Billie Eilish’s controversial Grammys speech, firing back at Kevin O’Leary after the “Shark Tank” star criticized the singer’s remarks on Fox News.
The Oscar-nominated actor didn’t hold back, responding directly to O’Leary on Threads with a blunt message: “Why don’t you STFU.”
Ruffalo Defends Billie Eilish, Calls Out O’Leary
Ruffalo’s post quickly went viral as he accused O’Leary of hypocrisy and dismissing artists who use their platform to speak out.
“It’s hilarious,” Ruffalo wrote. “You will go on any show and talk trash about just about anything and smugly expect people to listen — but then you attack a real artist who dwarfs anything you’ve ever done for saying something that resonates with hundreds of millions of people worldwide.”
He continued by taking a sharp jab at O’Leary’s acting role, adding, “You played yourself well in ‘Marty Supreme.’”
The Role Ruffalo Referenced
In Marty Supreme, O’Leary portrays a cold, ruthless businessman who bankrolls Marty Mauser’s ping-pong career while repeatedly humiliating him — a performance Ruffalo appeared to use as a metaphor for O’Leary’s real-life commentary style.
What Kevin O’Leary Said About Billie Eilish
The clash stems from O’Leary’s reaction to Eilish’s Song of the Year acceptance speech at Sunday’s Grammy Awards. Appearing on Fox News, O’Leary criticized the pop star for addressing political issues onstage.
“As you rise up, whether you’re a film star or a music star, shut your mouth and just entertain,” O’Leary said. “That’s Celebrity Lesson 101.”
Billie Eilish’s Grammys Speech Sparks Backlash
Eilish’s remarks immediately ignited controversy, particularly among conservative commentators.
While accepting her award, the 24-year-old singer told the audience:
“No one is illegal on stolen land. I feel really hopeful in this room, but we have to keep fighting, speaking up, protesting. Our voices matter. People matter. And f— ICE.”
The speech drew loud applause inside the venue — and fierce criticism online.
Finneas Also Comes to Billie’s Defense
Billie’s brother and longtime collaborator Finneas publicly backed her amid the backlash.
“Seeing a lot of very powerful old white men outraged about what my 24-year-old sister said during her acceptance speech,” he wrote on Threads.
A Celebrity Clash That Isn’t Cooling Down
With Ruffalo, Finneas, and countless fans rallying behind Eilish, the exchange has become the latest flashpoint in the ongoing debate over whether celebrities should use award-show stages to speak on politics.
One thing is clear: this feud is far from over — and Ruffalo has no interest in staying quiet.