Ah this bit is sad. The exception only covers bypassing DMCA protections to fix your own stuff not distributing the tooling for it.
It is still a crime for iFixit to sell a tool to fix ice cream machines, and that’s a real shame. The ruling doesn’t change the underlying statute making it illegal to share or sell tools that bypass software locks. This leaves most of the repair work inaccessible to the average person, since the technical barriers remain high. Without these tools, this exemption is largely theoretical for many small businesses that don’t have in-house repair experts.