They are entitled to their own opinions yes. All those who have used both the Dukes and Kookaburra balls in identical conditions are welcome to compare them
If you haven't used both then you are forming an opinion because of what someone on tv has told you
As I said no-one was complaining about the kookaburra ball when we rolled Australia over. And South Africa haven't had many issues recently in the Kook ball not doing much have they?
Pretty sure I remember watching said ashes series and the ball being blasted then as well. SA commentators constantly make a note about the ball going soft early as well. They just seem to 'get on with it' as they don't have anything else so why bother discussing it. England have something different so have more of a discussion over it.
Many people will have used both types of ball. I brought both purely to see the difference and how long they lasted just so I wasn't going off TV pundits as you say. Not saying my mini judgemetn is perfect, correct, flawless etc.. It's as good as it gets for now though.