only because kami remade their bodies, if you don't HAVE a body it is kind of hard to, you know, HAVE a body
Goku immediately appears with his body, and Kami was literally dead around the same time Tien/Yamcha/Chaozu died and went to the Afterlife and he never had the chance to do anything like that as he was lounging around at the Lookout while Nappa killed them and him by killing Piccolo.
“universe will be turn to nothingness” literally the context there referring to U7 as whole.
It does, infact it's about it. Universes being erased, the context.
Those just means that the universe will be destroyed, it doesn't automatically mean every other place affected becomes part of the universe.
As noted above, Super has given numerous instances to the contrary more often than not distinguishing the Afterlife from "Universe 7" which refers to what's perceived as outer space. Unless the Afterlife should be downgraded to be 3-B if it makes up less than 30% of the universe.
This is a outer space, is a another translation for it
and this world map is specifically followed for the universe in the entire context super whatsover.
Toriyama always uses that phrase to refer to the universe (not sure why it would make a difference though, outer space literally is the entire universe and the only difference is that outer space is a perspective of beyond Earth) and even the Daizenshuu 4 that map was made for separates the "entire universe" from the "Afterlife."
As far as Super goes, it doesn't seem to treat that world map as being literal, from when the universes are shown when Super Shenron was summoned.
The context is that he'll Die there regardless of being strongest, besides it's Kami's referring to the outer space is clear as he stated that frieza would destroy the universe despite knowing he can't reach after life ever, this was the context there, there was difference established, not to mention he is still not as beerus was still there.
The context is that he would lose the title by dying, even though he was considered the strongest at the time (Beerus' retconned later existence has nothing to do with what the characters thought at the time), this indicates that the Afterlife isn't part of the universe. That Frieza example really only confirms that the Afterlife isn't part of the universe after all, and outer space is literally the universe.
This is similar to when they say Moro was wreaking havoc throughout the 7th universe and that the GP is dispatched through its entirety, even though they don't reach the Afterlife either.