Board Thread:Support Requests - Designing Your Wiki/@comment-26404729-20171126234847/@comment-27345308-20171127120708

No, you can't disable the mobile view on your wiki. You should instead make your pages portable so they can be properly viewed through the mobile skin, and there are users that can assist you in doing so. There are also some useful help pages related to it on Help:Mobile and the Portability Hub.

According to Wikia's statistics, more than 50% of page views come from mobile devices.