Bhakti leads to jihadism if it continues beyond the maximal knowledge attainable through bhakti. Jnana is a yogic pursuit best attained from experience of Reality. There is nothing beyond knowledge acquired through yoga which takes one through dharma-yudha to pave the way to Realisation, the realisation that is supreme knowledge and wisdom leading to faultless actions every moment one is challenged.
Further, bhakti causes mental disorders like paranoid schizophrenia and persistent delusional disorders that leads one to engaging in conflicts with the rest of humanity in the false belief that one is acting according to instructions from God.