Considering that for many of the posters, English is a second (or 3rd or 4th) language, you all might want to cut them some slack.
On the main topic, I would not count on Blizz actively following or caring about the fate of twinks, so taking matters in your own hands is probably not a bad strategy.
Personally, I think because queue times will be super long, many players with twinks will migrate to the 'normal' BGs and live with the experience gains. Specifically, I see two options: 1) they will level their old time twinks via BGs from 19 (or whatever) up to 80 or 2) they will create a level 10 semi-twink, level up in 10-19 WSG and retire them when they hit 20; rinse and repeat. BOA gear, easy to acquire blue gear, and cheap enchants will enable this twink factory option.
The fact that many players who thought that their new BG would be a twink-free nirvana will result in much QQ, bringing smiles to the evil twinks.