They have “hundreds of developers.” It seems completely reasonable for them to have a team focused on DX. It’s one of my most common recommendations for rapidly-growing companies, which are often focused on features at the expense of productivity. A DX team is one of the lowest-hanging fruits for fixing the problems that causes.

(Improved testing practices is often second, but that’s not a low-hanging fruit. It’s a big, juicy fruit that’s waaaaay up in the canopy. And then comes joint product decision-making within the team, which may as well be on another planet entirely.)