In addition most people do not grease properly, and I KNOW quick lube places will not even attempt it.
You have to clean the grease zerk carefully, not just wipe with a dirty rag but wipe, spray the crevice between the zerk body and the small spring loaded ball that admits grease and then wipe again. There is NO advantage into introducing dirty grease, you can not flush it out. This does add to the time needed to grease, so like all dedicated BTOG users you have to change your own oil and do your own greasing. Although I loved my astro, may it rest in peace after the tornado ate it, greasing it properly was an ordeal. I NEVER had to replave a single front end part other than shocks and brake pads in well over 200K miles. I expected t be approaching 400K by now. I am sure it would have made it or close to it.