My experience suggests that close to 10% of the population have experienced stream entry where that is defined as a Transpersonal experience. (Can we avoid getting bogged down in detailed proscriptions and definitions?)
Perhaps 2% of those have any idea of what it's about. The rest try and forget it, as it just complicates an already difficult life.
1% or less, try to build on the experience.
Knowing this makes minimal difference to one's progress along the Way.
On the other hand, isn't it wonderful, just BEING a Stream enterer, or maybe an Arahant.
The only problem I have found, is that the moisture from the stream tends to dissolve the adhesive of those Gold or red or blue stickers, - but if you look carefully, you can still see where they have been.