So the reasons are:

1. We want everyone to do the same, no exceptions. In particular, we don't like Apple and the lightning standard.

2. It's better for the environment.

Now, 2. is clearly wrong, as now just all the people already in the Apple ecosystem need to switch their lightning equipment to USB-C equipment, adding tons of waste.

And 1., well, is no reason at all. It's how you successfully stop innovation.

As opposed to now, when I buy twice as many cables on their own wear lifecycles because my phone doesn't connect to the same thing as my Switch or my Laptop?

This is literal FUD.

They brought back MagSafe because customers weren’t satisfied with USB-C charging.

They’re supporting both standard and proprietary. My MacBook Pro is connected to a multi port USB-C charger 99% of the time, which also charges my phone and my headset. MagSafe sits in the backpack when I need to work somewhere else than my desk, which doesn’t happen much. I’d argue it’s the best of both worlds.

If it only supported MagSafe I’d be seriously annoyed.

The problem with nonstandard connectors is when they get in the way of standard operation, not merely existing.

Magsafe delivers 140 watts compared to 100 watts for usb-c. That difference is not insignificant for people who aren't plugged in all day.