US National Security Act can be applied against Huawei regardless of what Meng admit or not. One would be naive to think that US would not seek revenge for their blunder in the Meng case.It matters to huawei if it wants to have the highest chance of wining its own case against US government or realistically limiting its damage until the breakthrough of 100% indigenous and economically viable chip technology.
US government had already proven that it was willing to sacrifice enormous economic losses of the Chinese market by just trying to harm Chinese companies.