I agree there is misinformation on the net, but I do not see anything wrong about growing orchids in the eastern or the south-eastern window. It provides the right light wrt. the intensity, duration and the spectrum. Much better than a west or a northern window exposure. If your Phal. did not bloom in the eastern window, it was not due to lack of light but due to excess of it. Phals need a short period of short days and cooler temperatures to trigger blooming, if it is warmer throughout and there is more light they will keep growing vegetatively. And believe me there are brighter places, I have to use a 90% shadenet to get 4500 footcandles of light which is considered above average even for high light plants like Vandas and Cattleyas.