The tenure of Rixon, a former coach of New Zealand, came to an abrupt end of Wednesday when Australian head coach Darren Lehmann said he no longer fitted into his plans.
The 59-year-old, a former wicketkeeper who played 13 Tests for Australia, said he was due to leave in April anyway and he had no issues with Lehmann but CA was another matter.
"I have no problems with the coaching staff, I have no problems with Boof (Lehmann). I can't quite say that about Cricket Australia," he told Sky Sports Radio.
When pressed, he added: "I don't like a lot of things they do. They interfere with a lot of the cricket decisions over the period of time and I don't necessarily agree with that.
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"It's none of my business at the end of the day. I do what I do -- I go out and do it to the best I know how. But it's probably just draining."
His scorn appeared to be largely directed at CA's high-performance chief Pat Howard, a former international rugby player.