I imagine that Q&As like this is why Al has white hair.
Anyway I interpret the answer to mean no limit to fabricated parts that are not potentially part of the robot. IE bumbers, hand outs, parts of your pit, tools, etc. This doesn't apply to parts that might be part of your robot. They are still a static 30 lb set that you brought in at load in. Q&A does not change rules as written. If that is required, they do it as part of a team update.