One of my biggest gripes with modern software is using notifications for things that shouldn't actually be notifications. IMO, marketing/advertising NEVER should be a notification. Notifications are for things where you find value in being interrupted such as receiving a message from someone you know or letting you know you have an appointment upcoming so you don't miss it. They're not there to tell you about some arbitrarily made up sale or discount. Any app that abuses notifications is instantly uninstalled from my phone which is why I have so few apps.