Yeah. In an M/s relationship, the idea (at least in those I've heard of) is that the two people know each other well enough that they can communicate without using a safe word. On the other hand, the people you're talking about are total strangers. It seems ridiculously unsafe to me to go into a scene with a Domme you've never met before who has admitted that she intends to pressure you to not use a safe word or otherwise consider your own safety. Nobody should be shamed or pressured about their limits or safety concerns -- that's how very serious accidents and injuries happen.