There were certainly attempts to suppress it such as the Proximal Origins paper. And the public "We stand together to strongly condemn conspiracy theories" letter where privately the were saying it was "so friggin likely". The reasons do seem kind of political, though more to cover up establishment cock ups and not upset the Chinese than a left right thing.
Even today Wikipedia says "explanations, such as speculations that SARS-CoV-2 was accidentally released from a laboratory have been proposed, such explanations are not supported by evidence." But if you look at the actual evidence it was almost certainly a lab leak.