The only change is escalation by the DEM side, lawfare, abuse of discretion, the only forbidden activities are those with criminal penalties (and there are essentially ZERO of those when it comes to government action).
Both sides abuse power against threats to authority, but it's new to have the aritocrats using lawfare agaisnt each other.
Both sides? These subpoenas were approved with bipartisan support in committee. McCarthy had months to kick the Quislings out the GOP caucus. He never did. Who knows how much intel they have been feeding Pelosi from GOP caucus meetings.