While I completely agree that Pelosi does this with insider knowledge, she and her husband also seem to be investing based on the hype they hear from people around them. Why else would the Pelosi's have taken such a bath on Roblox?! They had to have known shit is going bad over there, but they lost a LOT of money on that one...
So yeah, they do insider trading, but they are sometimes also the dupes in these deals. Look at their history. They make money, yes, but they lose a lot to stupid investments too, ones they obviously made because some Steve-Jobs-wannabe got a meeting with them and fired their reality distortion ray.