And why USB-A ports when all the shiny things now are made with USB-C.
With Apple having removed USB-A from everything but the Studio and the Pro (I'd be unsurprised if they disappear from whatever replaces the M2 Studio - and the current one only has rear-facing type A ports) many people will appreciate these - and few people will be inconvenienced.
Feel free to use cheap USB-A to C adapters to plug your shiny USB-C things into the USB-A ports (most non-Apple-specific peripherals come with an adapter or alternative cable anyhow) - which, according to the press release, support the same 10Gbps data and 7.5W power as the 2 "extra" USB-C ports.
All these hubs support a maximum of 3 downstream TB/USB4 ports - so the additional ports were never going to support displays or 20 Gbps data, even if they had been USB-C.
Which Logitech mouse and keyboard I have the Mx keys and Mx master mouse and they are compatible with both the dongle and Bluetooth.
Sometimes, those wireless dongles offer better latency, fewer interference problems and "instant connect on power-up" than bluetooth... and since most of the electronics fits in the shaft of teh USB-A plug they can be very low profile. Where USB-C dongles do exist they tend to stick out almost as far as a USB-A dongle in an adapter.
Why TB5 hubs and docks released by various companies so far only have 2.5G ethernet the most? I want 10G.
AFAIK it could be because a 10G ethernet controller needs more than one PCIe lane - the chipset in newer "TB4" hubs only provides one (that's the cost of adding support for multiple downstream TB ports). Older "TB3" docks had more internal PCIe lane - but then they used a bunch of PCIe-to-whatever controllers to provide the other downstream ports so there would be contention.
Not saying it wouldn't be nice for some, but they're fairly niche and relatively expensive - and if I was that concerned about ethernet bandwidth and latency I'd probably want it to have its own top-level TB host port & controller on the Mac rather than have it contending with displays and other devices.
Anyway - this particular style of hub is intended more as the replacement for an old-school USB hub and the emphasis is on providing as many downstream USB & Thunderbolt connections as possible, rather than having functions like Ethernet and audio built in.
There's a video from Sonnet that explains TB3 vs. TB4 and PCIe lanes. I guess TB5-to-4xPCIe chips are in the pipeline, since it supports faster data rates and PCIe4, but they'd have been mostly pointless with TB4 which only offered teh same data rates as TB3.
