I have and EX2 and my LP button went out after half a year. I originally got it for Virtua Fighter 5 and used the shit out of punch mapped to the Red “B” playing Pai.
I also modded someone elses stick who that the same problem but wih LK, or “A” since they liked to use a lot of ducking shorts in Street Fighter.
The buttons that get pressed a lot tend to die. I eventually replaced the buttons, but I also have the benefit of having tools and knowing how to make arcade sticks. If a button does eventually die, you will need more tools than you would need than the SE to repair it, and will have to replace all the buttons.
The reason that people recommend sanwa, or seimitsu is that those buttons tend to last a good few years, and can be easily replaced if they do go dead.
You cannot go to Hori.com and just order a replacement button. or remove them without desoldering.