Some frequency measures of "expected" streakiness (all assuming nominal 80% attrition reduction) - if you do the number of fights on the right you should *expect* the occurrence to happen once for you. The first table is a good luck streak. The other 2 are bad luck streaks.
N in a Row | No Attrition |
20 | 87 |
25 | 265 |
30 | 808 |
35 | 2,465 |
40 | 7,523 |
45 | 22,959 |
50 | 70,065 |
55 | 213,821 |
60 | 652,530 |
N in a Row | All Attrition |
2 | 25 |
3 | 125 |
4 | 625 |
5 | 3,125 |
6 | 15,625 |
7 | 78,125 |
8 | 390,625 |
9 | 1,953,125 |
10 | 9,765,625 |
N Fights | >=50% Attrition |
10 | 30 |
15 | 236 |
20 | 385 |
25 | 2,710 |
30 | 4,325 |
35 | 29,216 |
40 | 46,100 |
45 | 304,580 |
50 | 477,360 |
So let's say we have a serious fighter who hits 8000 fights:
They should expect to hit 40 in a row with no attrition once a season or so. 30 in a row ~daily.
They should expect to hit 6 in a row, all attrition, once every couple seasons or so. 5 in a row a couple times a season. 4 in a row ~daily.
They should expect to hit 15 attrition ticks out of 30 fights a couple times a season. 10 attrition ticks out of 20 fights ~twice daily.
If you actually hit 10 attrition ticks *in a row* on a regular basis, that would indeed be evidence that something's fishy (there's a good chance that's happened to someone as there'd be > 10 million fights across all GBGs on all worlds - but a streak that bad shouldn't happen to "everyone").
But if it's not happening to the individual you're talking to it's natural to assume the people claiming it's happening are exaggerating something somewhat more attributable to natural RNG streaks that still feels like rotten luck (like 5-6 in a row ; or 10 attrition out of 15 fights or something like that).