Cameras are also a really big deal in the context of smartphones. I assume a lot of silicon is devoted to making them work well with a small sensor in a smallish footprint. Apple is probably not going to add a couple hundred dollars to a MacBook BOM (and maybe a bump for the lens) for a better webcam--at least they wouldn't have before the current situation. Who knows now? Maybe a top-notch webcam is a selling point. Many people still wouldn't set up lighting and eliminate backlighting to give it a chance.

Apple got over having a "camera bump" on their phones years ago. On laptops they have way more options--the most straightforward would be to put a matching notch in the bottom-case for when it closes.

Finally higher quality build-in cameras are being included in iMacs. I hope very soon they start making their way into their laptops.

If you look at iFixit teardowns, even the front camera modules are practically the full thickness of the phone, which is much thicker than a MacBook lid.