A problem with this theology appears to be that because no works are needed, only a statement, apparently, this could be used to justify any crime and injustice. It is clear however that practicing the message of love of Jesus is more difficult and involves some work. Traditional examples are empathy, charity work, rejecting bigotry and hate, etc. Another problem seems to be elitism: we shall be saved but not you, which is itself a type of bigotry. It's also clear that there are groups embracing rapture theology who are also promoting dangerous extremist conspiracy theories. Then not all Christians believe in their rapture, it's only a particular interpretation.
Finally, for someone like me, what ancient people believed and promoted, how modern groups interpret those writings, is not necessarily knowledge. What about all other deities humans created for themselves, the endless religious schisms, etc? The fact that scriptures contradict themselves and that reliable knowledge contradict ancient popular beliefs? All of that evidence tells me that it should not be taken seriously. Except for the effect it has on humans, because religious rhetoric and quote mining is really used by people to justify anything they like, including evil. Real education and critical thinking here may help to put things in perspective and understand cultures in their context.
Obsessing about a hypothetical end of the world is not healthy, it discourages people from dealing with actual important and urgent things, to plan their future, etc. It's also used to exploit victims, cutting them from the world and manipulating them. Confused people also cost society a lot: they're easy to trick into voting against their own interest, or to abandon their right to vote alltogether. Their abusers run businesses without paying proper wages or taxes. This is evidence that despite claims of a faith not needing works, cults do make their fidels work a lot...