It's interesting that you gloss over the fact that Reign eSports had been getting their matches done as promptly as possible all tournament long, and it was always your VK teams getting extensions and making Reign eSports wait a long time before being able to play their next match.
Reign eSports finished their quarter final match against The Inactives on May 3, 2020. Reign eSports was forced to wait 13 days before finally being able to play their semi final match against VK2 on May 16, 2020, which resulted in a 6-0 victory for Reign eSports. Then after having to wait nearly 2 weeks just to play their semi finals match, Reign eSports had to wait ANOTHER 10 days for VK1 and OG to finally get their semi finals match done on May 26, 2020.
Quick recap: Reign eSports was sitting around waiting for 23 days, just to play 1 match and find out who their final opponents were going to be.
Then 4 days after the OG and VK1 semi final, the OG captain, after failing to make contact with the Reign eSports captain (iirc, the OG captain didn't even bother sending the Reign eSports captain a message because he never saw him listed as online on steam), decided to contact a regular online member of the Reign eSports team on Saturday night, to ask for a match to be played the very next day.
Now, why would a regular member of the Reign eSports team be in the position to know if his team would be available to play the very next day, especially when his team had been thrust into a period of general inactivity due to the rest of the tournament being delayed for so long? He was asked late at night, meaning this Reign eSports member wouldn’t even be able to find out about his team’s availability until the very day of the "scheduled" match.
This regular member of Reign eSports obviously wasn’t in a position to promise that Reign eSports would be able to play the next day, and instead, it was pretty obvious that what he meant was that he would try to get his team together to play the next day at the requested time IF possible, since that’s what the OG captain would have liked to have happened.
It clearly turned out that Reign eSports did not have their team available to play the finals match at the tentative date and time on such short notice. After this regular Reign eSports member let the OG captain know that Reign eSports would not be able to play at the desired time they had discussed, they agreed to reschedule the match for the next weekend, a time where certainly both teams would be available and ready to play the most important match of the tournament. Then about an hour after they agree to reschedule, Reign eSports gets told that the finals aren't going to be allowed to be rescheduled and that LES is enforcing a forfeit. The person who was forced to become the Reign eSports representative obviously took issue with that, and got in a call with LES and the OG captain to discuss the matter, and even after hearing all the context of the situation, LES still decided to enforce the forfeit on Reign eSports.
Extra tidbit: After LES sent the prize money to the OG captain, he had the gall to suggest to Reign eSports that they should still play against OG the next weekend just for fun, knowing full well that the members of Reign eSports absolutely hated the state of Bannerlord, and were only playing in the tournament for the chance at easy money.
TL;DR: Reign eSports had to wait 23 days just for VK1 and VK2 to lose, then after all 3 of LES' teams were eliminated from his own tournament (at a time when VK was claiming to be an undefeatable clan), LES forced a forfeit on the finalist team Reign eSports after just 5 days, due to a questionable single scheduling issue made between OG's captain, and someone who wasn't Reign eSports' captain.
Even OG's own captain disparaged LES and his tournament immediately after receiving the money. Imagine that, objectively messing up so badly, that even the person handed free money couldn't help but point out how poorly handled the tournament was.
