No. If they truly cared they would have open beta. I pay for the official content, I am not going to be their beta tester.
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And if they did have an open beta, they'd still need good actionable feedback beyond someone like you saying "This sucks."
The existence or lack of existence of an open beta is totally irrelevant to the fact that you saying "It sucks" and not elaborating is about as useful as spitting toward the wind. It's near worthless feedback.
My response wasn't about them "truly caring" (which is also irrelevant). It's about you not knowing what good, useful feedback looks like.