But that is not the only reason that I think mobile friendly is loosing ground. Website Hacking as been a major thorn in the side of hosting providers. Any form or entry field is a potential liability for a hosting company it is a opportunity to have the server process data that can open up access to the server.
In fact one hosing company I have accounts with will no longer allow any forms on the websites I host there. They have essentially said NO CMS style sites.
I have to admit to you that you're not alone in this go / no-go quandary. As one who did convert and ended up rolling back, I've gained some distinct insight on this whole mobile friendly scenario. And, in 2018 I am taking a hard nosed approach to marketing my business.