So a NeoGAF moderator and a US Gamer reporter has a Nintendo Switch, and according to him Nintendo have indeed confirmed that there will be a web applet functionality added in the day 1 update that allows you to access any websites required to see it via a web applet - a barebones browser and very limited browser that can view a webpage, similar to opening a Chrome tab on your phone while in another app, like the Reddit or Youtube app. This was previously leaked as a feature in the developer kit documents from not too long ago.
" Bright side: the Wifi with sign-in page issue? (The Switch currently can only sign into open or password-protected wifi because it has no web browser.) Nintendo confirmed the patch will have a fix for that.
"Ability to connect online using hotspots that require authentication, such as at a hotel or café. A web applet will open up so the user can sign-in or accept terms of use." "
http://www.neogaf.com/forum/showpost.php?p=230862794&postcount=272
Polygon also reports the same.
" * Connecting to internet hotspots"
http://www.polygon.com/2017/2/23/14704686/nintendo-switch-day-one-patch
So to debunk this misconception that people are spewing about, you will be able to access Wi - Fi connections that require you to click a link, log in or register on a website before using it on the Switch even though it doesn't have a full fledged browser.