The bigger issue here was intense pressure from the union (Screen Cartoonist's Guild). Disney's animators were the highest paid in the industry and worked under the best conditions. Disney typically gave discretionary bonuses to all of his workers (up to 20% of a film's profits) in the early days. As his company continued to grow significantly in size, he couldn't afford to pay "everyone" these generous bonuses, and rather, began to single out those that really went above and beyond. This left a bad taste with those who no longer received these discretionary bonuses. Making things more challenging was the effects of the Great Depression, which further impacted Walt's ability to compensate his staff so generously. Many disgruntled workers (essentially, the lower performers who no longer received "bonuses") succumbed to pressure to unionize, which ultimately led to the infamous strike.
What's more telling to me is the number of folks who stood by Disney's side through thick and thin. To me, that's where the focus should be, and this tells the bigger picture.