As long as people label it stress reduction and enhancing concentration it may be OK, but if they label it Buddhism it may be wrong. Then they're giving a wrong idea of Buddhism. If they're able to be truthful and say "These are some of the methods within Buddhism that I have taken out of Buddhism, to help us, help you, find more peace in your life, but there is much more," then that may be OK. And that may then whet a person's appetite to become more interested in what Buddhism does teach, in the larger path of purification of the mind. I think that amount of truthfulness will get beyond that feeling of being respectless and the cause of many wrong views. To say that these are just some techniques that have been taken out of the whole context of Buddhism and can be helpful in bringing more tranquility, rather then saying it is Buddhism. So, to be truthful about it can be helpful and then actually it may whet the person's appetite to learn more about what the Buddha teaches.