Well, CXMT is not gated by ASML machines because they can't buy them. They can raise their capacity because they have access to the domestically produced steppers. They are not as good as the ASML ones, and if the memory prices were not bonkers, they'd never make a profit using them, but as it is the low yields and high die sizes don't matter.

They are. They are using ASML DUV machines for memory. Samsung, SK, and Micron have moved onto EUV machines for memory because they are better. So CXMT not only has to rely on ASML, they have to rely on a worse machine to make modern memory chips.