They teach prosperity theology
This is ALWAYS a bad sign.
Jesus loves me more than you, because - look! He has given me sooooo much money. God wants us to be rich and if He loves you, you will get money! Same if you are ill - that's because God is punishing you because your faith isn't strong enough.
i have money so I am better than you, that's why God loves me more. See all those poor people? They are poor because God hates them! God hates them because they are EVIL! Therefore we must shun them and not help them, otherwise we are helping the DEVIL!
You will find the leaders of these cults are enormously wealthy. They are also bigoted and cruel.
They claim to follow Jesus, but you will never see them performing a kind or selfless action. Jesus' love and acceptance for the poor, for sinners, for the sick, for outcasts, for anyone on the fringes of society somehow doesn't get a mention. Nor does the exhortation about the love of money being the root of all evil.
Strange, that.
And yet these cults attract thousands of people, probably because they seem to offer a simple answer to everything, and allow their followers to blame the weak and vulnerable for their own plight, and thus take the responsibility for helping others away. It is a "me, me, me" doctrine for the bigoted and greedy.
I do believe that we should evangelise - but I try to follow St Francis' advice - "Preach the Gospel; use words if you must". If you consider yourself a Christian, your actions should embody Christ's teaching.
Cults are terrifying.