Local people become porters out of necessity. Being a porter is not a choice.
Porters have noted not having anything to eat while climbing during the day.
There is overcrowding in the tents.
Porters are paid as low as $4 per day when the standard rate is $8 and up.
You can demand changes as a tourist with your dollars. Tell companies you want fair and equitable treatment of porters. Demand proof of it.