For me, part of the draw of a D/s relationship is the vulnerability. The physical vulnerability, of course, but also the mental aspect of giving myself over to someone and giving them the power to wander about in my headspace at their own discretion. By not giving them full access to who I am, hiding "me" by lying or by omission, then really I've killed the point of the whole relationship for myself.

I want to be known.

Does that mean a Dom needs to know that I tripped on the cat going up the stairs with the laundry and cursed profously for a good minute long rant? Nah. That has nothing to do with me or our relationship, and I can prolly skip ratting myself out for having the vocab of a longshoreman. On the other hand, if I blow a task or screw up instructions, well, there's a reason I was given the task to begin with so I'm going to fess up so we can deal with it. Doesn't matter if it's large or small, it has something to do with the relationship so lets getit out there.