Man. I think the Purge was a decently balanced event (as in, a horribly dark event but with just enough buildup that it didn’t make the characters seem insane and mustache-twirling about it), and this description seems too kind. And, frankly, a bit boring.
My impression from the Purge was that Jaina’s first offer to Aethas, after portalling in and killing his bodyguards, was to tell the Sunreavers to get out immediately - and when he refused/didn’t immediately agree, she decided to arrest/imprison all the Sunreavers and took exile off the table.
So is Chronicles saying that Jaina is/was/now had been (dagnabit, retcon time-travel verb tenses!) teleporting Sunreavers out of the city and not to the Violet Hold? I guess that’s one way to avoid having to write about what happened to captured Sunreavers, if the new lore is that they were never captured at all.
But that waters down the theme slightly - I saw the switch from ‘leave’ to ‘arrest them all’ as part of the overall theme of ‘Jaina is reacting so badly because she felt she knew what was going on and was in control of the situation, only to be confronted with evidence (planted) of yet another Sunreaver betrayal, and being broken by the realization’ where the ‘arrest them all’ reaction fit neatly into the theme of ‘Jaina desperately trying to regain control over the situation’. So, I as the player reading into this theme assumed that Jaina was going to run her own inquisition to find the spy, interrogating all the captured Sunreavers and treating them all as suspects.
In that mindset, where she’s driven mad searching for the traitor and viewing all Sunreavers as her possible target(s), then I feel that’s the best possible reason for her to gloss over how crazy the Silver Covenant is getting. Not excuse it entirely, but make it the kind of mental break leading to a horrible lapse in judgement that her allies could see as redeemable while her opponents could view as unforgiveable - aka, a good wedge character for faction relation stories.
But if she suddenly was just teleporting them away into exile instead… Eh. It revokes a chunk of Jaina’s personal responsibility (not all of it, though), but in doing so, makes her seem so forgiving and restrained even at her personal worst depths that it makes it seem worse that she allowed everything else that was going on.