Google Sending Mobile usability warnings to huge number Of Webmasters. And the platforms as wordpress, prestashop, shopify… are part of this massive communication.
The message I receive is: “Fix mobile usability issues found…” follow by the domain name.
My honest opinion is that this is the way Google is saying us: check out your mobile usability because we are going to change the search algorithm and this will be important.
I checked the tools offered by Google for checking and fixing the issues and at the end of the day the main factor is the template you have.
For sure every single web is different and a deep analysis is required, but the template is key here.
The first question that comes to my mind is,
which platform has the community with better ability to react to this change?
Any thought about this?
WordPress
Google + 
Facebook