The stud isn’t just broken, it looks like its been dropped and it snapped right off of the block.
If you know somebody that welds they may be able to get the broken screw out this way. https://youtube.com/shorts/XODPhxEMCzw?si=Mb1zQ4fNTdE8jAYi
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.