Installing Linux after Windows should be fine without disconnecting drives.
The reverse is troublesome. Microsoft’s installer is all too happy to shit on your drives, even the ones you’re not using for installation. But Linux installers are much more friendly to dual-booting and all kinds of complex setups.
We’re comparing it to gen 1 to emphasize how far it is from being competitive.
Not really new; this has been the case with all the Tensor chips. I kind of assumed Google was going to step up their game at some point, but I don’t think Samsung can produce chips on par with TSMC. Google is switching to TSMC for next year’s Tensor 5, so maybe we’ll see a big jump then.
That said, I don’t think it’s a deal-breaker. I’m running a Pixel 7 and it’s “fine”. The Pixel 6 had bad throttling/overheating problems, but the 7 and 8 are better. We’ll see what the Big Problem is with the 9 series. There’s always something.