Exactly. Even Renato means 40mm stacks when he uses the term 'racing shoes'. Plenty of spikeless shoes exist under the limit (25mm for track I think?) many of which would be accurately called 'racing shoes'. I wear adidas Sub-2 on track. Lighter than clunky Nike 'racing shoes' and easier conrnering too since they are not tall, mushy, and unstable. Since when are there exactly 2 choices: thin, midsole-less spikes, and Nike Vaporfly?
Anyway, good to see him in Puma. Wasn't he the guy fired by asics after being caught in Nike?