They shouldn't be trading options, which is part of the heat. Normal people don't do that.
But also, Pelosi's trades (or her husband's trades) have mostly been bullish on big name tech companies based around the Bay Area. It just so happens that sector has utterly dominated stock returns in the last few decades, and not even in a surprising way. So that's not really insider information, but rather adopting an unusually high risk profile for gambling on already successful tech stocks.