I have written in the application but anyways okay.
Since we know a few PL members left their clan for the sake of the community, like Chocolate and Devil so I asked him the question about what would they choose if they're given a choice of two things, PL or MK. As it was my clan and I had the right to ask questions but they objected them, info given already in the app.
Ah, I thought there was something extra.
From that reply you cited on the MK forum I don't see much objection to the idea of asking questions. What I see is Tazz restating MK's policy, which you appeared to be ignoring. If MK's policy is that MK-PL dual membership is okay, then your question was simply irrelevant to a potential applicant.
To me it seems, rather, that you left because you weren't comfortable abiding by MK's policy. Is that correct?
In my eyes this would be fine, we too do not agree with dual-membership, but the difference in reasoning here is important. To spell it out clearly:
Reason 1: they didn't accept me asking questions.
Reason 2: I couldn't accept their clan policy on PL.
Seems to me you left for reason 2.
As it was my clan
Just because you belong to a clan doesn't mean you can individually go against its stated policy.