Christianity is not the most popular path. It involves self-denial, it involves thinking for oneself, it requires a willingness to step out in faith even if no one else is. We cannot just go along with the majority. Nor can we prefer a little bandwagon just because it is little. Truth cannot be measured by popularity or rarity.
False preachers look good on the outside, but their motives are selfish.
By their fruit you will recognize them. It may take some time, but we will eventually see whether the preacher is trying to benefit himself, or whether he is truly serving others. But appearances can be misleading for a time. The agents of sin try to look like angels of God. Even the false prophets look good for a while.