I'm 18+ years post-op. I still dump.
It's been probably 17 years since I "worried" about dumping. Really, it's not all that different than learning to live with a minor health or life condition. Like a bad knee, food sensitivity, living with a spouse or roommate, you learn what you can and can't do and when. You learn, and adjust, and keep moving on.
I've learned generally what foods (sugars and fats) in what quantity over what period MIGHT cause me to dump and then I generally stay away from those foods in those quantities over that period. especially when I'm not at home.
But over the years I've learned that the window can be moved to being more sensitive than usual. Fatigue, stress, anxiety, illness, and other such things can make me more sensitive than normal. Sometimes it sneaks up on you, then you deal with it.
It would have been worse for me if I didn't dump. Sugar as well as fats would have made more and more appearances in my diet. I don't think I would be where I am physically if I didn't dump. So a surprise dumping episode now and then to remind me of where I was and where I could be even after surgery is certainly a well received reminder I'm more than happy to endure.
Good luck,
Tek