Did not read TFA and if it doesn't focus a lot on the 10 nm/Intel 7 botch it's not fine, but I've read TSMC's very roughly equivalent 7 nm node was also non-EUV but less aggressive than Intel's. And it succeeded unlike Intel, which then made it natural to start introducing in production EUV in their 7+ node. Here I suspect gaining real experience in chips delivered to customers trumps whatever volume you'll end up doing.