> The stories coming to light are not about "unwanted sexual advances" as much as they're about actual assault, or at the very least harassment.
The widely-discussed Dave McClure quote was definitely an unwanted romantic advance (I don't know whether I should date you or hire you). And most of the VC revelations that I've read seem to be in this vein, though I admit I've not read every detail of every article. Have there been allegations of sexual assault/rape? I'm not sure what harassment looks like in the case of VCs/entrepreneurs, since there's no employment or education context that would make the behavior illegal (for better or worse). That is to say, there's no legal definition here, and it's hard to have a productive conversation about a phrase that could be so broad as to include anything that annoys the recipient.
I'd also point out that there's a difference between an "unwanted sexual advance" and an "unwanted romantic advance". The latter are unavoidable and therefore cannot be objectionable in general. (They of course can be objectionable and even illegal in certain contexts, such as employment or education.)
The phrase "unwanted sexual advance", on the other hand, implies that the language overtly refers to (1) a sex act or (2) certain body parts. Many people find these advances objectionable/offensive if not preceded by reciprocated interest.
When discussing behavior that may be objectionable or illegal, I find it useful to use the broader term ("romantic") unless the narrower term is applicable. Otherwise it can give the impression that the interested party was acting in a manner that was at the very least crude, when in some cases this is not what occurred.