Former Rep. Adam Kinzinger (Ill.), who is one of Donald Trump’s most outspoken Republican critics, used a weekend thread on Threads to eviscerate what he slammed as the president’s fake tough-guy image.

“Let’s talk about what real strength looks like — and how Trump’s MAGA ‘alpha male’ act is the opposite of it,” Kinzinger began, calling the persona “a mask for insecurity” and “an armor for men terrified of looking small.”

Read the entire thread on Threads.

“Real confidence doesn’t need to shout. It doesn’t need gold-plated buildings, fake bravado, or endless insults. It doesn’t tremble at the thought of someone else living differently,” he wrote.

The former pilot and combat veteran contrasted Trump’s bravado with the “real warriors” he served alongside, who, he said, knew “strength is proven in action, not hashtags.”