They wouldn't just start throwing money at every project that has reached 1000 stars on github.
Open source projects are always about social credits or doing something for the fun of doing it. In rare cases when they aren't it's always responsibility of the author to find funding or come up with a business model.
Adopt my framework and put me on the same playing field as their engineers in terms of information and resources. Flask-Ask is just way better than anything they have for Python. Even their Python related tutorials are terrible. Also, they're so focused on JavaScript they neglect a lot of important languages like Python and Ruby.
I could see them building their own Flask-Ask on top of Chalice, but I think it's counterproductive they push Lambda so hard for Alexa. Cross pollination I guess. Lamdba doesn't support WSGI (which Flask relies on and Lambda doesn't do unless you use Zappa). Personally, I don't think serverless is a panacea. It's good for some use cases, but nothing beats a VPS with a database on it for the wide majority of things including Alexa.
Where do you get such sense of entitlement? Amazon didn't ask you to write it you volunteer your own time and resources and now you are telling Amazon what they should do.