Nice article and good argument for the use of webviews.
I have built several bots and I have to admit I was not even aware this was a possibility. I think webviews are clearly better in some situations.
There is a risk with webviews I think: with a lot of webview use chatbots might start to look like glorified ways to see webpages within Messenger. This would be a shame. But quite possible considering there is rather negative backlash due to the over hype of NLP capabilities. What do you think?