I have this model, it makes a nice paper weight. It's cheap and cheerful but it doesn't last very long.
I fixed our old washing machine in the same way... It's now about 10 years old. My Mrs used to be a bit viscous with pushing the buttons, hence they broke. Since I've fixed it (and do most of the washing). It's been fine, approx 3 to 4 years ago?
Sorry to hear about your trouble with the other model but i have this dishwasher and it only has 2 buttons which feel pretty sturdy to me. I've had it for over 6 months.
I've already rang and was told beko won't do anything as it's out of guarantee. I've managed to drill a hole and use a cocktail stick to keep it working. ( this is how I know they are designed to break). The buttons aren't aligned and so over time the plastic will eventually fail.