If you think anyone has "forgotten" the issues you're deeply mistaken.

Apple essentially has a monopoly on iOS so just because people have adapted to their decisions doesn't make their decisions correct, or at the very least, painless.

If a headphone jack existed people would still be using it.

The USB-C example is particularly ironic given that it was Apple that was fighting switching over to USB-C on the iPhone until forced to do so by the EU. For years you could carry an Android and Macbook with a single charger, but needed 2 chargers for a Macbook and an iPhone. When Apple dropped USB-A completely it was painful for years, and people still have trouble with it. Most competitors still include at least 1 USB-A port.

Which wasn't the case for the CDRom or the floppy drive examples, showing that those decisions were correct in a way the USB-A removal one wasnt.

Further, even when Apple dropped the CD-Rom, it was a phased removal starting with teh Macbook Air, which made complete sense. People who bought the MacBook Pro still had CD Roms (except for 1 of the cheapest models). That was the correct way to approach this. Remove it from a device where it made sense to remove it, while keeping it for the Pros who needed it, but also signaling that it was going away giving people time to transition their workflows.

The USB-A port was signaled for 1 year at best (and even then it really wasn't signaled...it was simply removed from the cheapest model, which could have been seen as cost cutting more than anything else), and then a year later all the PRO laptops lost their USB-A ports completely. This was the opposite of the kind of transition they did earlier (such as keeping Firewire on the Pro laptops for years after they were removed from their no Pro versions).