Yeah, looks like that's the diff OP intended to link.

At face value, it seems even worse than presented.

Removed:

>"Participants will be tolerant of opposing views."

Modified:

>Before - "Behaviour which can be reasonably considered harassment will not be tolerated."

>After - "Behaviour which can be considered harassment against protected classes will not be tolerated."

The "reasonably" removal aside - for an attempt to be much more precise and inclusive with language, why would they narrow the previous "harassment" to "harassment against protected classes"? I'm sure this wasn't the intention, but rather than adding or intensifying any protections, the change, if read literally in the context of the diff, makes it seem like harassment is now tolerated if you aren't a protected classes whereas it previously wasn't tolerated at all.

I think a better route would've been to keep that line as-is and add a new line saying something like "any remarks that could be considered disparaging, mocking, or exclusive towards any protected classes will not be tolerated". This makes it clear that any kind of singling-out of protected classes is disallowed, regardless of the fact that some people may consider the definition of "harassment" to require something more severe than that.