Considering aeroelastic flutter, when an eigenfrequency of the wing meets with an aerodynamic frequency, the commonly mentioned solutions make sense: avoid the convergence zone by limiting speed, or by increasing the wing's eigenfrequency trough stiffness, reduced weight, or reduced span.

Makes sense, especially if I use the spring and mass model for the wing:

I'll use the analogy with the conventional spring as it makes things easier to understand for me.

So Wikipedia says: "Prediction involves making a mathematical model of the aircraft as a series of masses connected by springs and dampers which are tuned to represent the dynamic characteristics of the aircraft structure. [...] Small carefully chosen changes to mass distribution and local structural stiffness can be very effective in solving aeroelastic problems."

My 3 questions are:

1: Do I understand correctly that with this approach, the wing will act similarly to the following model, where the motion is rather chaotic?

2: This should have no certain frequency. Does this mean flutter is avoided?

3: Does this mean flutter can be avoided by redistributing mass around the wing, without increasing stiffness or reducing weight?