@eugenenine Whether this topic is over-commented is debatable, but it's certainly a perennial favorite, right up there with arguing about wheel sizes and the proper direction to wrap bar tape. The "over-biked" debate usually boils down to what a rider prioritizes.
On one hand, modern trail and enduro bikes pedal so efficiently that the traditional penalties for having "too much" suspension are almost gone. For many, the added comfort, traction, and confidence of a longer-travel bike simply translates to more fun on more trails, and it's easier on the body. It’s like bringing a full toolbox to a job; you might only need a screwdriver, but it’s nice to know the wrench is there if you need it.
On the other hand, there's a strong case for being "under-biked." Riding a less-capable bike, like a hardtail or even a rigid, on familiar terrain can make mellow trails feel exciting and challenging again. It forces a rider to focus on line choice and technique, which is its own kind of reward. Ultimately, it seems the "right" amount of bike depends entirely on whether your goal is maximum speed and comfort, or maximum engagement and challenge.