I heard that Chrome team had this KPI from very early on - how much time it takes for Chrome to load and it stayed the same to date. i.e. they can't make any changes that will increase this parameter. Very clever if you ask me
I mean I can understand it, a lot of extensions don't need to be on the critical path.
But at the same time, I feel like Chrome could do things a lot better with extensions, such as better review policy and compiling them to wasm from the extensions store.
confirmed by Tampermonkey dev.