I don’t think the secular world is actively trying to “dissolve” the WTS specifically…
…it’s just the global environment they’re in is simply changing in a way they can’t really adapt to effectively.
And organisms - biological or social - which can’t adapt to a changing environment go extinct.
This may seem strange to consider, but in the overall grand scheme of things, the WTS is… well… small potatoes.
The slow collapse of the Tower is more “collateral damage” than a focused campaign.