That’s not the reason, it’s reputational and liability. Screen shots of Bard screaming racist language would damage Googles brand in a measurable way, even if you really like racist screaming. They provide a service to all people, and almost all people don’t like hate speech. The lesser evil is to refuse to do things that would embarrass google and diminish its brand value, even if you feel not being racist is “woke.” But it is definitely not political, even if a political party has decided to take up the mantle of defending things most people consider embarrassing or hurtful. It is a calculated business decision that protects their brand value.
On the other hand, I think I agree with the subtext behind the semantics, an unlombotomized model would let you discuss whatever topics the mainstream culture deems hurtful or embarrassing that a service provider would not allow, and that in itself is a good thing. You’re entitled to be you, even if most people strongly feel your opinions are hurtful.