Yes. The one reaction remains though:
-[REACTION:SIREN]-
[NAME:Sound the alarm - Wakes sleepers]
[BUILDING:GARRISON:CUSTOM_A]
[PRODUCT:100:1:BOULDER:NONE:INORGANIC:SIREN]
Its in the garrison. I thought something as simple as the siren (with only one reaction anyway), does not require the research/extra workshop.
Btw, I leave the reactions, inorganics, interactions, buildings, all that in the raws because people might not like the change and it allows to revert it easily. Thats why so many unused reactions and inorganics exist in the mod. They just sit around. the players will never know. Has never been a problem, until lately, when more people started looking at the raws and be like "what is this? what is that?"