、？
Content aside — what's with this pompous way of talking?
Literal
Content [topic-は] setting-aside, what this pompous way-of-speaking [topic-は]?
さておき ('setting aside / leaving aside') is a discourse connector that brackets one topic to focus on another. 内容はさておき ('content aside') dismisses what was said to criticize how it was said. なにこの ('what's with this') is a casual, slightly exasperated exclamatory question. The rhetorical question format makes the criticism of 物々しい (pompous, overblown) phrasing sharper than a plain statement would.