You didn‘t get the post. Every tennis player that reached 3+ slam finals eventually won one at least. Doesn‘t need to be the 3rd final, can also be the 4th (Murray) or 5th (Lendl).
So Ruud will be a future GS winner. Maybe today or in the near future. But he will win at least one slam because he already reached 3 finals.
Yes I forget I pulled it off the top of my head point was if u look at everyone with 3 or up RUPs they have at least 1 slam.. Rudd will be the first not to have 1 if he doesn’t make any more GS finals