There have been edge cases (for example when running the installer) on which the hookInfo in the module handler was outdated, but the moduleList was updated.
One possible call route is install_finished -> module_set_weight ... drupal_flash_all_caches() -> call some hook,
see #1806334: Convert the node listing at /node to Views for one problem caused by that.
Let's just call resetImplementations once we set new modules.