That’s as may be, but to call it “bigotry” is needlessly excessive (and, to be frank, a bit absurd when set against actual bigotry).
Absurd to be sure, and it common in the modern day to shout "bigotry" at anything due to the most negative sociopolitical behavior/actions usually associated with the word. In no way should it be used in any description of entertainment distinctions such as live action and animation.
Some need to brace themselves and accept the reality that many still view animation as content for children and will never see or consider it on the same level as live-action, even when dealing with the same subject matter.