Easy, Gina. No reason to get nasty over this difference in approach. I prefer to find some common ground.
There is the "right" way to grow plants by duplicating their native habitat as much as possible and I understand that is what you are advocating. I have no issue with that and appreciate your extensive knowledge of the origins of many plants. However, there is also the practicality of how plants are grown in commercial nurseries and made available to the average consumer for use in their homes.
Plants are remarkably adaptable to conditions in which they don't normally grow. Medinilla's, among other species, can be adapted to a non-epiphytic potting media and grown successfully indoors that way, even in low humidity. It may not be the preferred way to pot an epiphyte, but for a plant that has been grown and its roots already adapted to a non-epiphytic medium, it is usually best to leave it that way rather than potentially doing significant damage by replacing the soil it is growing in. That is especially true for those with considerably less experience than you and other serious hobbyists. The advice I offer is not so much intended for experienced hobbyists like yourself – who don't need it - but for folks who simply want to keep their plants healthy and alive as easily as possible.
Just for the record, while I do regularly advise against unnecessary repotting, I also I do recommend repotting and how to do it properly when it is warranted. To write that I never advocate repotting ANY plant is inaccurate and unfair.