Jon Edwards (VP of Falcon launch at SpaceX): https://x.com/edwards345/status/1932494220499280221
Last week, SpaceX successfully completed a controlled deorbit of the SiriusXM-10 upper stage after GTO payload deployment. While we routinely do controlled deorbits for LEO stages (e.g., Starlink), deorbiting from GTO is extremely difficult due to the high energy needed to alter the orbit, making this a rare and remarkable first for us. This was only made possible due to the hard work and brilliance of the Falcon GNC team and exemplifies SpaceX's commitment to leading in both space exploration and public safety.
SXM-10 was 6400kg to GTO and ASDS landed first stage. That shouldn't add up based on the super old Wikipedia F9 B5 payload capacity numbers, but SXM-9 was 7000kg to GTO and had an F9 ASDS, too, so there's the margin.