I agree except that I don't see it as a total boycott. After having gained so much knowledge and perspective through years of participation, there are still certain activities that are worth the time (such as commenting on participation in posts like this, as you have.) Another example would be voting and documenting evidence of vote cheating, which takes very little time, is needed, and very few people are aware. The calculation is dependent on personal skillset and access/influence in areas needing improvement.
Also agree in the sense that many overestimate their ability to change the system from within it.