Is this implying that a publicly-traded corporation whose software is installed on millions of computers around the world has the same level of agency and responsibility as a preschooler?

When it comes to IT reliability and security, kinda, yeah.

Windows AV and MDM is a bit of a horror show in the corporate space. I worked somewhere where developers weren’t allowed to use WSL because it was blocked by McAfee. We also had 3 different MDMs running and they were slow as balls even though they were modern 8 core laptops.