I agree with you on both points. (A) I believe that every phone has this issue, and (B) Samsung has simply removed the notification without fixing the problem. Here is my experience thus far:
I purchased the phone the day of or the day after it launched. I immediately started having the sd card eject and remount by itself multiple times per day. If it where simply a notification upon boot up, it would not have been a problem. However, the card was EJECTING (you could see this in the notification if you caught it at the right time) and remounting itself. During this time any pictures taken on the phone would disappear, as would any apps that had been transferred to the card. If I were playing music, or playing a game, either the music or the game would stop. Obviously this was the card being ejected. Oh, and occasionally the phone would reboot itself after these errors. I reformatted the card in and out of the phone, factory reset the phone, tried various sd cards. Nothing fixed the problem.
So I used AT&T's 14 day return policy to exchange the phone for the same model. I immediately encountered the exact same issues. Again I factory reset, reformatted the card, etc. Of course this didn't work. I called AT&T once more. This time they refer me to Samsung's warranty center. So I go ahead with the exchange again...same model phone. But instead of a new device they send me a "certified like new" phone. That in itself made me very angry. I pay almost $800.00 for a device that doesn't work and they send me a refurbished unit. Unsatisfactory and shoddy business practice.THE SAME PROBLEM. So just to be curious, I downloaded an SD card monitor off the Play Store...the monitor showed the card ejected itself 67 times in 2 days. 67 TIMES! This is including night hours or time spent at work when I do not touch my phone at all.
This is a defective device. Period. It's not a simple notification that you "just swipe away lol". I am not in the process of getting a 4th phone and I will continue to exchange phones until I receive the working device I paid for, or I will report Samsung to the BBB.