By mature, they probably mean 7nm or even 5nm. Semiconductor manufacturers are always keeping old nodes spun up for technology that doesn’t require (or wouldn’t

By mature, they probably mean 7nm or even 5nm. Semiconductor manufacturers are always keeping old nodes spun up for technology that doesn’t require (or wouldn’t even function properly) on smaller nodes. Spinning up a 7nm/5nm fab allows them to free up their flagship fab for 3nm.