Perhaps they meant "announced RISC-V silicon" as in something you can buy (if not right away, at least at some specified time in the future)? AFAIU the BOOM tap

Perhaps they meant "announced RISC-V silicon" as in something you can buy (if not right away, at least at some specified time in the future)? AFAIU the BOOM tapeout was a test run, with no intention if giving or selling the chips to outsiders. If we take this stricter definition, is there any RISC-V hardware out there except the SiFive ones, which are apparently simple enough that they are indeed not susceptible to these issues?