If devotion does not lead to action, it is not true devotion in the first place.
The words before the verse below speak, “I hate, I despise your religious feasts; I cannot stand your assemblies!” In other words, we gather not simply for the sake of gathering. We gather so we can be sent out: enacting justice and displaying righteousness through creating practical solutions to those who need it.
Christianity is really boring if we are not living it out. God is alive, moving, shaping, and forming the world around us. Either we can be a part of the Kingdom descending on earth by being active participants; or, we can simply sit at large assemblies, read books, and pray that someone would help the marginalized so we can continue to be passive consumers of a fake Christianity.
If you are a part of a large assembly, make sure that you are being led to action. If you are not, find new assemblies.