Yes, whenever you hear “there’s no scientific evidence for X” you should keep in mind that there are published meta-reviews in support of homeopathy and telepathy.

Yes, there might be good reasons to assume that a lot of the studies that find that homeopathy and telepathy works are flawed but saying there no evidence often just ignores the research.

If there really no evidence in favor it usually just means that nobody studied the question at all. In that case if I hear from someone who lost weight with method X and nobody did run a study on it, there's nothing wrong with trying method X yourself provided the method doesn't seem dangerous.