Because you get a update once a update for a package comes out, If you dont update for a very long time you need to download a very large update.
Sure, and that’s exactly what you want if you are on a rolling release, isn’t it? If you neglect the rolling release for a month, what did you expect would happen? Also if you have more apps and packages, the more updates will come out. Rolling releases are for people who maintain the system and care about the updates.
What if my pc breaks down or I cannot use it for a month or smth.
On servers and pcs I don’t use often yeah its fair