I should clarify that: I agree that WebOS is an amazing OS. I had a great time using it. I really liked the Enyo framework, and most of the apps were well optimised for tablet. Despite that, the app ecosystem as it stands is dying, and I wanted to see what things were like on the other side of the fence. Installing Android was straightforward (I'm going to develop a nervous tick with relation to the iPad in a few months, no doubt).
Note that you don't remove WebOS when you flash Android onto a Touchpad; it sets itself up to dualboot :).
I know it's dual boot, but I also know a lot of people who just bought a cheep Touchpad to install Android, and never booted into webOS. Many never even gave it a chance, and hence are missing out on arguable a better tablet experience than ICS (it certainly has more tablet-optimized apps).
As for the webOS ecosystem dying, I'm willing to wait and see what happens with Open webOS later this year before I agree with you there. It's certainly in a lull with no new hardware on the way, but once Open webOS hits that issue is no longer relevant as I can install it on any existing hardware that supports Android.
Note that you don't remove WebOS when you flash Android onto a Touchpad; it sets itself up to dualboot :).