I don't know why some people find the idea of Chinese EMALs so improbable if they are being truly objective.
Given the fact that China has developed and commercially operated maglev train lines, which uses the same core technology as EMALs, the fact that China can and is development EMALs really should be surprising or mind boggling to anyone.
China being able to draw on that prior experience, work done and expertise developed from its civilian maglev train projects to speed up EMAL development again, is pretty much to be expected, compared to the US, which has never developed civilian maglev technology, which had to start from a much lower base when developing EMALs, compared to China.
All too often, I see western 'experts' and pundits apply an unreasonable, and almost arrogant 'Chinese tax' delay to their expectations of how long it will take China to do something, which could be roughly summaries as taking how long it took the west to do it, and then arbitrarily adding X number of years on top because the Chinese 'obviously' couldn't be expected to be as good as westerners at anything.
When the Chinese not only beats those baseless expectations, but often also the length of time the west took to make those breakthroughs in the first place, that is when all the 'inferior quality' and 'copying/stealing' allegations starts popping up.