Unusually high blaze spawn rates

Noticeably high spawn rates for a nether fortress located within a warped forest, specifically among blaze. The spawners are further inside this fortress and not within range.

On the initial screenshot, the proportion is not particularly high. AFTER slight combat, a large group of 5-6 spawn on the nearby bridge to refill cap, leading to 12-15 blaze in the vicinity and no visible Endermen.

Seed: 8556217752044609211
Location: -160, 67, 12