Away Messages Questions

First question is for the devs, is there a reason why we cannot pin away messages? I've been getting some really cute ones lately, but it won't let me pin them.

Second, this is for the community, is it just me, or are other people getting more frequent away messages? The first six months I had an account I got zero, even though my notifications were always on on all my devices. Then when I would get one it was perhaps once everyone or two months. But I received two today alone from two different bots. And the messages are so cute and wholesome.