There's no user0 signature/profile functionality on Reddit but there is here. The tip bot is pretty redundant - if people want tips they can just put addresses in their profile/signature (and very many do). You can also entirely avoid the overhead of the tip bot service and use the network directly. What problems does a btctalk tip bot solve? It only seems to create problems.
It's much faster to just write "+tip ldrgn 10mBTC" than it is to open blockchain.info, login, click send, copy and paste your address, type 10mBTC, and hit send.
Ha. I've switched sides in this battle.
I'd say that while you're right, that it is much faster, the disadvantages (tip bot service overhead) either outweigh the advantages (speed & ease of use) outright, or the advantages don't outweigh the disadvantages enough to justify establishing such a redundant system.