Nah no problem. Clearly illegal goal through player inserting self into play by influencing keeper
Would i make such decision? Nope, because despite the obvious impeding, no way Lunin reaches that. The same applies, to the Rudiger situation vs. Almeria, in which Almeria player is already late for the jump, and being impeded by Rudigers junk is irrelevant.
As for Cules, legality clearly depends on the team affected. For example Lunin cannot get to the ball anyway so impeding is irrelevant, so goal stands. In parallel Almeria player also cannot get the ball anyway, so Rudiger impeding him should not matter. But it does. Lol.
So. Honestly who gives a frack. Decision per rules, first fact. Leipzeig are trash, who will get trashed on Bernabeu if Real feels like it, second fact. Cules are the last fans on this planet who should argue about refs for the obvious reasons. Lolz.