I don't see the point in cheating. They will get caught eventually; especially with the level of social media we expose ourselves to these days.
You say that, but several of the cases brought up in the other thread were serial cheats that VLM organisers ignored or didn't bother looking for. And when social media sites like this one are complicit in that cover-up by pretending it doesn't happen, it's little surprise that it goes on year after year.
There will obviously be outliers lit, especially when you're on a steep improvement curve, but around 83-84 minutes is considered a good indicator of sub-3 potential. 'Required', or 'bare minimum', well clearly not.
I suspect you have a good chunk coming off your HM pb next time out.