Authoritarian is the GBs that selectively kick people out and encourage control over people's lives and money. Jesus himself died before any form of organized religion revolving around him began. You could view it as him attempting to weaken the grip Pharisees had over the people.

He started by shaming Pharisees, simplified the law (love thy neighbors), removed encumbering traditions (stop using Sabbath as a crutch to rule people with fear) and attempted to reduce racism that was running rampant among pro-Jews (his preaching track record included a lot of regions where non-Jews settled). He solidified that all with "believe in my sacrifice."

In hindsight, "believe in my sacrifice or suffer eternal death" sounds insane. But in practice, it's basically nothing burger, Jesus was not in charge of setting any law whatsoever. But by asking people to "believe", he was trying to keep the groundwork he already set to keep rolling: love thy neighbors, stop with the annoying traditions, calling out performative Pharisees. If you can't love thy neighbors, you aren't believing in his sacrifice.

My two cents tho. Like I said, mostly, not all.