Pardon my ignorance and slight derailment of the topic, but could someone explain what a Jhana-Wallah is for those of us who don't know the term? I tried looking it up but had no success.
In about the mid-80's the term "vipassanā-wallah" came into use as either a jocular term for persons committed to one or another of the modern systems of dry insight meditation or a pejorative term for persons fanatical about the same. I don't know who came up with the term, but I first heard it myself from the Aussie Patrick Kearney when he was a monk in Thailand.
In more recent years, with the growth of interest in absorption practice, "jhāna-wallah" has come into use to denote those with a similar dedication to samatha-bhāvanā.
Khandhānaṃ rāsaṭṭhaṃ, āyatanānaṃ āyatanaṭṭhaṃ,
Dhātūnaṃ suññaṭṭhaṃ, indriyānaṃ adhipatiyaṭṭhaṃ,
Saccānaṃ tathaṭṭhaṃ aviditaṃ karotītipi ‘avijjā’.
It prevents knowing the meaning of heap in the aggregates, the meaning of actuating in the sense-bases, the meaning of voidness in the elements, the meaning of predominance in the faculties, and the meaning of suchness in the truths, thus it is called ‘ignorance’.
(Visuddhimagga XVII. 43)