I was indirectly pointing out that the OP had used the first line, not as a statement of belief, but as a token so that they could say the rest of what they actually believe.
Similarly, you say "I'm all for oppressed groups having a safe space and living their lives freely", followed by "but", followed by what you seem to actually believe. Which one of your statements is true?
We shouldn't train people to retreat when their beliefs are challenged. We shouldn't train people to hold their opinions as some strange mix of subjective absolute truth. We are all wrong sometimes, and we all need to be challenged.
The OP has clearly explained why they think safe spaces have gone too far, but they've not said under what circumstances they believe that they are proper beyond a general acknowledgement at the beginning of the comment. In order to know what's too far, it's important to know where the line is.