There have been no significant Google Algorithm updates for several months -
http://moz.com/google-algorithm-changeEtsy made a few changes in the past few months that could effect views but not likely from Google.
For example, Etsy now only displays one listing from each shop on each page of the Relevancy search results. Before this change, shops with a high volume of sales and using keywords popular with shoppers did have several listings on each page of Relevancy search results, after the first page. This should not effect views from Google.
I opened a new shop on Etsy 6 months ago and views from Etsy and from Google have been great and going up each month.
Do your stats show low views from both google.com and Google product ads?