You don't want your phone to last very long or have the option to be expandable when you need it, which most people do want or need.

esim is purely a software thing it seems, I know my phone has a dual sim slot and esim and all of it has been very useful in my travels compared to just having one of those. I also know that the battery is getting old and I'm going to need to replace it with a lot of pain, I also need a little extra storage for videos.

There's also been situations where I do want to plug in my headphones into my phone and forget it doesn't have a headphone jack.

Here's also the reminder that having these features on a phone wouldn't compromise anything about it and that there's plenty space to have all of this, there's no reason not to advocate for having these features. Removing things like the sim slot might be good in the long run to force carriers to support esim, but for many people It's obviously a scary thing for now.

This isn't the case for the removable battery and aux port though as these will pretty much always be needed or at least be a good thing, or they can put some money into supporting USB to AUX better and make dongles that perfectly fit their phones.