While that's mostly true, it's not entirely true. While the Kajidic system was predominantly in place over tens of thousands of years since the war with Xim the Despot, the Hutts had the capacity to militarize very quickly, and did to some extent a few times when things got tense in the galaxy. During the Cold War in the TOR period, they had at least some dedicated military ships like the Ajuur and Azalus. During the Galactic Civil War, they had some stuff introduced by FFG in 2015 (since those games tend to rely so heavily on Legends, we usually treat their stuff within that realm as part of Legends) like the Dor'bulla and Kossak, or the Dunelizard from Galaxies. Then, when they fully re-militarized after the Vong War, they were using ships which were identical to those used by the Hutts against Xim, like Batils and Tarrada Cruisers, so they clearly kept at least the option open of re-militarizing should they deem it necessary.
We did discuss an idea internally which I feel would allow us to stay true to the Kajidic as their main philosophy while still letting us represent that latent power which controls such a large portion of the galaxy in some GCs, but that'd have to wait for after 2.2. If we all feel comfortable with it, we'll discuss it more (I really only just brought it up with the team today).