EZ lube spindle and bearing repack question

I think a person with Badger's experience would do an excellent job in cleaning and repacking wheel bearings. However, an inexperienced person with limited knowledge of how repacking wheel bearings is accomplished would most likely do more harm than good and would be better off using the EZ Lube System. I recently replaced the brakes on my 12,000 lb 5th wheel after about 80,000 miles and using only the EZ lube system the bearings and seals were fine. Absolutely no grease past the seals.