In my opinion, a huge theme in the novel is self acceptance and love, as a woman. Throughout the novel Jane is at odds with her own and other's values of femininity. Both Rochester and St. John encourage her and find value in her for things she also values in herself, but from very different perspectives. Ultimately, St. John is very utilitarian in his love for Jane. His first devotion is to God, and he loves Jane for her potential to serve God first and foremost. It's important that Jane is also religious, and not at all opposed to a life of service, even to God, but she wants a partner that loves her first and foremost.

In general I think your whole characterization is uncharitable, to say the least. I didn't find any part of the novel wordy, tedious, or padded. I loved the writing, so to see your comment about a thesaurus was another surprise. Idk, seems like this novel wasn't for you, but when I read it, it was obvious to me why it's stood the test of time.