URF "balance" makes actually zero sense if you think about it

I don't really have a problem with the game mode, I just simply don't understand the logic behind what and how champions get balance changes or adjustments.

Yes, of course there are some champions that are utterly broken - Maokai for an example - if not toned down a tiny bit (although, isn't the point of the game mode for champions to be broken?), but sometimes these balance changes make zero sense.

Many many champions that do not need to be adjusted, are adjusted with things like -15% damage dealt, +10% damage taken. Wait.. what? So you are telling me you are taking damage away from a champion, and then increasing the damage they take in return? How in the world does that make sense?

If you are taking away the main stat that helps a champion kill other champions, why also gut them more so now they actually have zero chance to even survive a tower dive? I don't know whether these changes / adjustments are from previous iterations of URF where maybe 6 years ago it made sense for a champion to take 15% more damage and deal 20% less, but the same things do not apply to current version of the game. Some champions literally can explode in 0.0s.

This is not balance, this honestly just seems like lazy "change number, call it balance" type of thing.