10-day vipassana retreats worked also for me, almost 30 years ago. So much, I did about 1 year of them, concluded with 2 years in Burmese forest meditation monastery. Without hearing the podcast, I too saw many serious shortcomings with the original organization I practiced with. Therefore, was about 10 years later kicked out by a high-ranking teacher of them.
I wanted to somehow bring something back, learned in silent meditation. Therefore enrolled in a training of
Focusing-therapy, which sort of grasped the dynamics of personal change occurring also in sincere meditation - but in a counselling setting. However, myself could never touch that deep again. Probably for the simple fact, that hourly settings - even in therapeutic training - could be to daily mediations on a 1 : 10 ratio at the most only, in my case.
Found much meditation guidance in the original scriptures (translated, since I didn't want to learn an ancient language for that), and therefore my constructive criticism of the organization, finally kicking me out, was based on that.
Almost needless to say: one of my valid points were, that such serious meditation in the old scriptures was only considered beneficial with lots of preparatory practices long before heavy-core cushion pracice. And practicing for good health only, heretic and illusionary.
Despite so much in retreats, and now almost 30 years daily practice, I of course came down with chronic diseases (PAD, COPT, ME/CFS) at older age. Which I could bring the worst symptoms into remission again, with
an all-out life-style changing and comprehensive supplementation approach. Now for 15 years. PEMs, however, took the longest, 10 years, to get rid again.