You seem to be forgetting something: when people make intentionally false statements about their credentials or academic achievements in professional settings, they usually face severe consequences. Often enough, they get fired.

Zacharias lied about his credentials repeatedly for years. And yet, he never got so much as a slap on the wrists from RZIM. Why do you think that is?

“So basically, he called himself a “professor” at Oxford, when in reality he was an “assistant professor” ”

No that is not correct. He was never employed in a faculty position (nor any other from what I could find) at Oxford at all.

Further I disagree with you, acquiring a doctorate (from any accredited educational institution) means a great deal. While I would agree that a doctorate from a public state school can be just as good as from a prestigious private school it is still a significant achievement.

No, if you read the linked post he was not on the Oxford faculty at all, and certainly was not an Assistant Professor.
But the lack of credentials is not as big a deal as his repeated bearing false witness about his credentials.
Of course now we know that Zacharias had even bigger moral failings than lying about academic credentials.

So basically, he called himself a “professor” at Oxford, when in reality he was an “assistant professor”. I guess for those who take credence in things like college, its a big deal. For me, I don’t think highly of institutions like Oxford, or Harvard for that matter, because they have devolved into a cesspool of garbage within the last decade. At this point, such things should be irrelevant, yet, because of how people think, apparently it is paramount. lol. I have a Bachelors in Mechanical Engineering, but honestly, it doesn’t mean much, just like a Doctorate from Harvard doesn’t mean much. I haven’t been impressed with those who claim to have such achievements.

Don’t go blaming Moody. Blame Zacharias. I have four earned degrees and no one in any of the ministries I have served ever thought to check my educational qualifications. People tend to trust people. Fortunately, I had the diplomas/degrees to show my educational background. They could be easily checked by each of the schools I attended.