Dorje Drolo takes care of various incarnations of major Damsi (dam sri) as target who are big-time samaya breakers who opposed their gurus & vajrayana rules including the demonic fake tertons who are amongst the most evil beings as long term enemies of Padmasambhava & Yeshe Tsogyal in disguise, harmful local spirits of various kind, bad nagas rakshas stenmos & other malevolent particular cases of the eight classes who have fallen down & cause problems, unlike the good cases. However other practices such as Simhamukha, Guru Dargpur & Garuda should not be abandoned as they too are specialists and also tackle a variety of cases very well as in Guru Dragpur. Many great masters used different practices in various times as advised or from clarity to suit the occasion. Also we are told the accomplishments build up slowly over time. IMO they too are indispensable in the long run as many masters insist on practicing them as well as Dorje Drolo.
Dzogchen masters I know say: 1)Buddhist religion essence is Dzogchen 2)Religions are positive by intent/fruit 3)Any method's OK unless: breaking Dzogchen vows, mixed as syncretic (Milanese Soup) 4)Don't join mandalas of opponents of Dalai Lama/Padmasambhava: False Deity inventors by encouraging victims 5)Don't debate Ati with others 6)Don't discuss Ati practices online 7) A master told his old disciple: no one's to discuss his teaching with some others on a former forum nor mention him. Publicity's OK, questions are asked from masters/set teachers in person/email/non-public forums~Best wishes