Though he didn't agree with the principles of the Boundless Master, Yusuf Zuck still went along with the pretense because he realized that the Boundless Master was an extremely arrogant and aloof person.
To put it bluntly, he's just the kind of person who tries to act smart but doesn't quite get it.
When Yusuf Zuck spoke in agreement, he immediately beamed with joy, as if he'd found a kindred spirit, and looked at Yusuf with eyes full of enthusiasm.
Kenzo Ray was also quite astute, and upon realizing the Boundless Master's nature, he immediately chimed in, followed by others who praised him earnestly, causing the Boundless Master to wave his hand in delight, implying that his understanding was only slightly better than the rest.
The atmosphere turned into a light-hearted discussion session, discussing the Dao is about debate, so many present eagerly expressed their opinions.
