> The Arahat Daniel M. Ingram
According to the instruction I received, there have been no arahants since a few decades after the death of the Buddha. Choose your teacher carefully. Many meditation teachers are charlatans; watch out especially for those who claim to be enlightened.
> The type of meditation I had been practicing was jhana
...or "dhyana", if you go with the Sanskrit version.
The OP spends a lot of his words talking about "mindfulness" and the industry associated with it. But if he was practising the dhyanas, he was NOT practising mindfulness as such. Practising the dhyanas is serious, headbanging stuff, involving deep, single-pointed concentration. The dhyanas build on mindfulness, which is really a basis for all practice; but single-pointed concentration is almost the opposite of normal mindfulness practice.
The OP is correct that the "mindfulness industry" blames the faults of meditators for bad experiences. I've known people who survived bad experiences with meditation, but who were finally broken by being gaslighted by their teacher.
The "mindfulness industry" minimises the risks of meditation practice. The industry generally claims to be secular, or at least, to not depend on a religious interpretation. If you folllow an openly-religious meditation teacher, you shouldn't hear that reassuring touchy-feely nonsense; instead you will be told that the path you have embarked on is dangerous, and that if you aren't prepared to stick it out to the end, then it would be better not to begin.
And if you arrive at meditation as a result of psychiatric problems, step away quickly. You need to be mentally fit to undertake meditation practise.