What he really said was:
We spoke about these issues afterwards via e-mail and Torvalds doubled down on the need for ARM PCs. Torvalds said: "my argument wasn't that 'ARM cannot make it in the server space' like some people seem to have read it. My argument was that 'in order for ARM to make it in the server space, I think they need to have development machines.'
See:
https://www.zdnet.com/article/what-linus-torvalds-really-thinks-about-arm-processors/
Sorry El REg ....