Each deploy containing fewer changes makes sense however it's not the only reason. Another significant reason is that more frequent deploys means more opportuni

Each deploy containing fewer changes makes sense however it's not the only reason. Another significant reason is that more frequent deploys means more opportunities to identify and resolve any issues with the process. It becomes like a well-oiled machine. On the other hand when a process is run infrequently you tend to get surprised each time because something has changed or broken since the last time. Or you just simply haven't done the thing enough to observe the possible issues so every six months you discover and re-discover the problems.