There are two parts to the launcher update, the download and the installation.
Download is listed above installation.
This is normal for many programs (having to re-install the entire program upon updating), does not consume any internet data, and isn't an issue. The patch was 125 MB large this time around.
No one is hacking, No one is doing anything wrong. Technically if this was Pre BB everyone would die 24/7...
"Hacking" is not the go-to, end-all point at which something is or isn't allowed.
At least one user recently has reported being banned for dying to maintain their level. See here. This was contested, and was likely the result of dying in rapid succession which triggered the heuristic anti-hack.
In addition, whether it is against the rules explicitly to die repeatedly does not mean the behavior is encouraged. Game mechanics suggest this is not intended behavior, regardless of what is explicitly bannable.
The safest way to play the game is to play it as intended. Trying to abuse mechanics or otherwise play the game in an unintentional way can lead to issues, up to and including bans in some cases.
If you find yourself jumping through hoops to defend the behavior, it's probably not something you should be doing.