You're projecting your own image of what you want Dany to be. She's shown many hints that she could have the latent madness (keyword being 'latent' as it's described pretty clearly in the lore) of her family, and it's become more clear as the seasons have gone on and she's become more obssessed with the throne.
Dany has not done anything that Jon hasn't done in order to maintain respect. This "crazy" and "full of rage" Dany is a last minute insertion that could have worked out if it had been fleshed out as I said.
How good and kind and such a good ruler, as Dany was portrayed in the previous seasons, was the whole point why Tyrion and Varys came to her side. She was portrayed as the best option to rule Westeros and now in this last season they are shoving her away so that they can give it to Jon.
There should have been another season to flesh out Dany's madness, give some proper hints, make people talk, if they wanted it to go that way. This whole Dany is cray-cray stuff is rushed and another demonstration of bad writing.
I have defended this series up until the previous season in spite of the issues in previous seasons everyone admits, but in this season they dropped the ball.
Some people will defend anything.
Nintendo is selling their IPs to Microsoft and this is true because: