No wonder Dax left ,and never turned back.
Technically it wasn't "Dax" who left. Ezri didn't have the symbiont then.
But anyhow...if it is what the two brothers grew up with, I'm not too suprised that they tolerate it.
Now...I personally like the episode, if only because of how much it revealed about Ezri's life story and family.
Now...on Yanas, Ezri's mother: While I would not call her a Nazi, I admit she is a woman who is obsessed with security, and therefore control. It is worth noting that Ezri notes to Sisko that Yanas freaked out when other business started out-performing the Tigan mines.
Note also how Yanas rants to Ezri about how much she "sacrificed" for the family. The episode shows that in her obsession for security--for the family as well as the company--Yanas has sacrificed more than she could imagine...including Janel to the Orion Syndicate...and Norvo to the slammer.
But the "sacrifice" rant reveals how she has ruled--and how she has controlled Ezri's brothers: through guilt. One gets the impression that Janel had it drummed into him that it somehow was
his fault if anything went wrong in the company. Thus, when problems started showing up, and the Syndicate came to make an offer he couldn't refuse, Janel felt it was his duty to accept.
As for Norvo...well, we find out along with Ezri how "the constant drumbeat of criticism" slowly broke him down, until despair became the norm for him.
What set Ezri apart from her brothers is that she refused to be hurt. She refused to accept any feelings of guilt--and left to seek her own way.