The main reason I hate these kinds of claims by Ts is because it's a hype, big words and probably most often the reality does not follow. When we truly feel emotionally safe and comfortable with someone, let's say with a close friend, IMO there is no need whatsoever to say it is a safe relationship and place to be open and vulnerable and people usually don't say that, just feel it - isn't it what would be a so-called "secure base"? Many Ts claim to provide that but how many times is it actually palpable for the client, especially clients who tend to have problems sensing interpersonal safety?