It really isn't. If your goal was to make investing while in congress less appealing, you'd pass laws, yes, but also pay people more. AoC had made the point before that if you make congressional pay too low, it becomes only feasible for the already-wealthy to maintain a political career. Also note that being a congressperson has weird extra expenses, you usually need to have two homes, one in DC and one in your home state, so expenses will naturally be higher than average.
(this is one of the reasons that, e.g. Trump claiming to donate his presidential salary was frowned upon: Sure it sounds nice at first, but it implies that either he'll profit off of the presidency in other ways, or if that becomes a norm, that only those who can afford to donate their salary should become president)
(this is one of the reasons that, e.g. Trump claiming to donate his presidential salary was frowned upon: Sure it sounds nice at first, but it implies that either he'll profit off of the presidency in other ways, or if that becomes a norm, that only those who can afford to donate their salary should become president)