Yes, why I believe UMNO/BN is bad for Malaysia. Reasons can easily be seen if you are unbiased. The main reason is UMNO/BN practices patronage and money politics.
Why is patronage bad for Malaysia? Because get voted into positions wielding power in their political power, they need to buy support from warlords, division heads. And division heads in turn need to buy support from division members. Not only that, while the opposition volunteers generally work for free, UMNO/BN volunteers needs money in cash or kind to work, etc.
And because of this need for money to buy support, there is tendency to get money unethically. So there you have it all.
