One of my main problems with Indian religions has always been cult-like and occult-like practices that is present in it, especially Hinduism. I thought Buddhism, given what Buddha taught, would be immune to it but it doesn't seem so.
Vajrayana consists of weird mantra chantings, doing of taboo stuff like alcohol and sexual orgies. Many Buddhists online seem to say "Oh no no, it is not just about sex. Westerners are misinterpreting it!" but sex DOES seem to be a huge part of tantra and therefore Vajrayana. Whereas Buddhism teaches self-restraint, Vajrayana teaches doing sexual orgies and chanting mantras and remembering aweful looking deities while doing it. The practices are esoteric and has to be done under the guidance of a guru. This is seriously cult 101. You can study anthropology and religious studies, almost every single cult revolves around these kind of practices. A lot of abuse happen under these things - there are gurus who pretend that the illicit sex they are having with disciples or consorts or children are not bad but part of the 'path to enlightenment' and in the process simply use their influence to get sex and rape/groom people.
One of the reasons despite being born in a Hindu family I distanced myself from Hinduism was the, what Abrahamic religions would call, 'demonic' practices - strange rituals, gods who are immoral and make people do immoral things, leads to insanity, frauds and immorality, esotericism, etc. Abrahamics already have a very negative view of Hinduism and Buddhism, and things like tantra and Vajrayana are definitely not helping. Why is such a school of practice allowed in Buddhism?