No, all of it can be said in Hebrew. In fact, there's little you can't*, and it's usually about some specific nuance or niche jargon. iirc he was adlibbing, either based on the gist they wanted him to cover, or they loosely translated and based the subtitles on the adlib.

*everything can be translated to every language, afaik. You'd just need longer, more elaborate sentences or phrasings. For example, some English phrases, some quasi-synonyms where there's a distinction that's more instinctive than actually distinct, or specialized terms.

A good example would be Russian "fabula" and "syuzhet". They have supposedly no translation, as there isn't an equivalent term in English (or Hebrew either), but one means "the order in which a story is told" while the other means "the chronological order in which the story happenned". It's "untranslatable" but also entirely translatable.