While installing and uninstalling is a benign thing, it seems like a repetitive time waste as well as repeated installs not being something i'm in the habit of doing. So that would be my justification.
The use case would be that it doesn't require the install/uninstall. That's (small, but still) a burden on a user to remember to uninstall or whether they did uninstall last time and if they need to restart. The interface could (hopefully) be as simple as a right click on the system tray icon, with a list item of the checked/unchecked variety, to see the status of "[✔️] Load Vanguard on next restart" or "[ ]Load Vanguard on next restart]." That saves time from checking add/remove programs or booting Valorant up.
This would also seem to be in line with what seems to be the intent of the change you've already described - to make Vanguard feel less intrusive and to give the user control. This would further respect a user's time and attention, as well as reduce the a...