Defining Part 4 - Code cleanup toward defines (... and the rest) (#19388)

* I wasn't done

* nits

code/modules/admin/verbs/randomverbs.dm

@@ -24,7 +24,7 @@
 		return
 
 	if(ismob(M))
-		if(istype(M, /mob/living/silicon/ai))
+		if(isAI(M))
 			alert("The AI can't be sent to prison you jerk!", null, null, null, null, null)
 			return
 		//strip their stuff before they teleport into a cell :downs:
@@ -774,7 +774,7 @@ Traitors and the like can also be revived with the previous role mostly intact.
 	log_admin("[key_name(usr)] has gibbed [key_name(M)]")
 	message_admins("[key_name_admin(usr)] has gibbed [key_name_admin(M)]", 1)
 
-	if(istype(M, /mob/dead/observer))
+	if(isobserver(M))
 		gibs(M.loc)
 		return
 
@@ -790,7 +790,7 @@ Traitors and the like can also be revived with the previous role mostly intact.
 
 	var/confirm = alert(src, "You sure?", "Confirm", "Yes", "No")
 	if(confirm == "Yes")
-		if(istype(mob, /mob/dead/observer)) // so they don't spam gibs everywhere
+		if(isobserver(mob)) // so they don't spam gibs everywhere
 			return
 		else
 			mob.gib()