[Kirby64]

You know they won't. Take a look at what they did on the iPad lineup for what is coming on the iPhones:

Basic iPads only support USB2.0 transfer rates (480 Mbps). The iPad Pros get full Thunderbolt speeds. Expect the same for iPhones, I'd say.

The EU mandate is about forcing a single connector type. It doesn't say anything about quality of service of the connector, because ultimately it depends on the device.

[ThatPlayer]

The new iPad Mini is fun, it's got USB 2.0 client (hooked up to a host computer), but a USB 3.0 host controller (plug a USB drive into the iPad).

I like comparing it to a Raspberry Pi 4 that has the same thing.