People, in general, are not capable to recognize holiness of someone.
For example, the case of Shri Shirdi Sainath (India). In the beginning people believed he was a mad man and they kept far from him. Then they saw he was doing miracles and so they started looking for him and considering him divine.
Of course, he was divine. But the problem is that even demons can do miracles, even possessed people can do miraculous things.
It is so that many demons have incarnated as spiritual masters in this historical moment to deceive and deviate spiritual seekers.
So, seekers must be very careful. If those masters are not capable to give you Self Realization, then they are only impostors.