The trouble with throw away accounts is that there is technology to link the accounts by comparing your writing style to other accounts. Hacker news had a good demonstration of that awhile back.
Using stats this is called stylometry and I agree this will probably be easier at scale now. You can also match posting windows, pull additional features from database dumps/hacks.
This was far more impressive to be quite honest [0].
[0] https://news.ycombinator.com/item?id=33755016