If you believe in 'gods, idol worship, brahminism (?) and casteism', you are hardly an advaitist. All beliefs belong to 'Vyavaharika'. There are none in 'Parmarthika'. Keep the two level separate, otherwise you get into confusion.
Vyavaharika and Paramarthika are also dualistic perceptions for a true and honest advaitan, if they become mere labels or mental creations. They are useful for the dualists but not for the advaitan.
Even the dualists get it wrong at times.
Even Shankaracharya, though a propounder of Advaita, operated under these dualistic parameters, as he identified with his dualistic identity as a brahmin, and asked Shiva who came to him in the form of an untouchable to move away.
Later realizing the wisdom of Shiva, he admitted and regretted his error. The incident also paved the path for his enlightenment.
The advaitan takes into account Vyavaharika and Paramarthika more accurately than the dualist, who views things on the basis of his mental conditioning. This is because the advaitan sees them as they are, and evolves a measured response to them, than the dualist who operates under the parameters of mental conditioning, likes and dislikes.
Ramana Maharshi and Ramakrishna, though being of the brahmin caste, treated all including those of the lower strata of society, poor and underprivileged, with love and consideration. Ramana considered even animals as his fellow beings and friends, and fed them when they came to his ashram showing his nondual perception.
This is important when you take into account recent incidents of cruelty towards harmless animals arising out of a dualistic perception.
Who is this Nirmala Devi? Do you mean the woman who sold 'Sahaj Yoga'? You may think of her as an enlightened person, she is not so for me. She was one of the many commercial guru that we have in Hinduism.
I attended a session of yoga when their party came to town and I was not charged for it, even though I was ready to do so considering the operating expenses of the place they rented and food they distributed. Their teachinigs lead by female teachers, also helped a lot of women learn meditation in that area. I found it unique and inspiring considering the male-dominated nature of Hindu society with issues of dowry, bride burning, female foeticide, eve-teasing, high rape statistics and so on.
I am all that exists. I am 'ajay0' too. Who is making a distinction? 'ajay0' too, in 'Parmarthika', is none other than me.
The 'I' is either the egoistic little self or the true
Self which Rama, Krishna and the sages emphasized.
The true Self makes no distinction while the egoistic little self creates labels for itself and others and creates distinctions.
As Sri Muruganar stated,
" The Self, our Being, is awareness."
In awareness or pure consciousness, one sees no distinction and does not create labels.
Body or matter-consciousness results in dual perception and creation of labels, and identifying with them.
The advaitan uses labels for practical purposes but does not identify with it. He identifies only with the true Self or pure consciousness .
Who said that you exclude meditation? But there is a way to do it and a way to arrive at conclusions in 'Vyavaharika'. You seem to be missing that.
Even taking Vyavaharika into account, one has to go by the scriptural injunction of 'Prajnanam Brahman' or Brahman being pure consciousness, and not creating other perceptions out of one's conditioning.
In this regard, I know of a case study of a doctor who prescribed a medicine to a patient to apply on his forehead for headaches. The patient decided to swallow the medicine instead thinking it would be more effective and give faster results, and did not follow the doctor's prescription and advice accurately, thinking himself to be smarter.
The patient later developed health problems and complications and consulted the doctor again where he admitted his error. He was highly reprimanded by the doctor for pursuing his own self-directed course and not obeying the doctor precisely.