Passing information on to to other people is fine. However, in this case, why forwarding? If you are convinced by the information, why not do an effort and post it yourself in the group?

I found this extract summarizing well Author's POV "This means that while groups can generate high levels of solidarity, which can in principle be put to powerful political effect, it also becomes harder to express disagreement within the group. If, for example, an outspoken and popular member of a neighbourhood WhatsApp group begins to circulate misinformation about health risks, the general urge to maintain solidarity means that their messages are likely to be met with approval and thanks. When a claim or piece of content shows up in a group, there may be many members who view it as dubious; the question is whether they have the confidence to say as much. Meanwhile, the less sceptical can simply forward it on. It’s not hard, then, to understand why WhatsApp is a powerful distributor of “fake news” and conspiracy theories."