@Xylight When they taught you a really really important rule of the language and this rule has a little exception. Then another exception, also another exception, please add one more exception, around of applause for another exception, and another exception...
The cycle continues until you see that the "rule" should be the exception and all those "exceptions" should be the rule.
@Syrc According to one of the admins they were experimenting with removing the login in mobile websites.
That means that they're preparing for a possible future where they remove said feature.
https://www.reddit.com/r/help/comments/135tly1/comment/jim40zg/