Yes, we had this ability all the way back in 2012 on the Galaxy S3, which had NFC and Wireless Charging built in to a user replaceable battery pack. It was available on many phones in that era and could easily be brought back if we gave up some “thinness” that we have now.
It’s not as if they didn’t still get paid under the previous model. It’s just not conducive to a profit line that has to be on an incline forever, else be axed or forever altered, such as in this case. It’s greed, pure and simple. They have to find a new way to make the line on a chart go up and people who are more interested in short term gain figured they can wait out the backlash storm and rake in more profit on other businesses that are already locked in. They’re not dumb, they just aren’t incentivized in anyway to be concerned for the long-term health of what they are built on.
Those are covers over additional lights to protect them from damage when they are not required.