Oh dear, I'm not a 'true fan' in your expert opinion...how shall I possibly go on and live another day...
Maybe you've got the patience to watch a shitty product every weekend, and enough free time to earmark some of it for something that you know could very easily, and most likely these days, wind up frustrating you, but I don't. Sports aren't important enough to me to warrant living and dying with the club every weekend. You talk about being a 'true fan' like it's some badge of courage or like it affords you some kind of unique distinction or benefits beyond what a casual fan would get at the end of the day, but it isn't, and it doesn't, so get over yourself.
The problem with diehard fans, especially when you're dealing with an organization that is perennially profitable and successful from a marketing perspective regardless of the results on the field, is that they create an environment in which the 'team' doesn't have to perform well in order for the 'organization' to achieve its ultimate goal, i.e. profitability and revenue generation. This can easily lead to the team becoming stagnant, because those in charge know that on the business side of things, the club is still going to generate millions in profits because they fans will turn out and buy the gear whether the team is great or shitty. A perfect example of this here in America has been the Chicago Cubs.
Ask yourself, what's the one and only way the fans can make their voices heard if they're not happy with the product on the field? Stop going to matches, stop watching them on TV, stop buying kits, etc.