Posteo doesn't have to retain IPs and doesn't, it also doesn't retain payment info (though if you transfer by wire there's still a window where a payment can be traced AFAIU).
They will also absolutely forward any and all traffic for a particular account to law enforcement when given a court order. What's it with criminals thinking that they can outsource opsec to legitimate businesses. Defending against a state-level actor actively hunting you down, watching closely and pouncing on any and every mistake, is a vastly different beast than making sure google doesn't know about the butt plug you just bought.
Part of the SoC makes a lot of sense but I'd still like to have an expansion option. Or, well, actually, maybe connecting it up via PCIe might be sufficient, latency is going to take a serious hit but if there's gigabytes of HBM on the chip acting essentially as cache it's probably fine for pretty much all practical workloads. Gigantic memory requirements don't tend to come with purely random access patterns.
OTOH that definitely puts the "N" in "NUMA". I doubt any OS but Linux could deal with the thing sanely.