Reporting spam / reporting ingame in all terms, is it a viable tool for GMs to track and ban bots?
No it is not. The GM can only see the name in a ticket and teleport to that player's location (if the player is online), listing a bot for spamming will place them together with people who are actually spamming, which results in less bans and more work.
Also people who hammer down on multiboxers, stop it, it will just get the thread locked. Opinions on that matter can be kept out of this discussion, unless it regards BOTS who multibox.