The Wiki tab here in GitHub just tells you to look at the in-game manual. What about people who can't play MC? What about those who have fallen from being able to play MC due to increased system requirements? Those people may want to go to an official wiki with updated information and pictures. Please give us that.

The GitHub wiki is now updated to contain the information the SecurityCraft Manual contains. Please keep in mind, that it is automatically generated, and the manual may visualize things (like recipes) better than the wiki does.

Why would they need information on the mod if they cant play Minecraft? And they can easily just join the support discord server. https://discord.gg/U8DvBAW

EDIT: There are also numerous unofficial websites that offer a SC Wiki/info on the mod

Why would they need information on the mod if they cant play Minecraft?

It would be out of curiosity, mostly. Also, if they were to get a new computer in the future and play SecurityCraft on it, it may be handy to know the stuff beforehand.