you can work with your comrades who are within parties without yourself being involved in any of those parties, not belonging to an org doesn't mean working alone. this is how I choose to organise at present, as i don't see that belonging to any of the orgs available to me would augment my own ability to do the work - instead they would simply restrict my ability to do creative political work in favour of dedication to a particular, flawed line or method. your view that there are "many good leftist orgs" shies away from necessary criticisms of the issues holding those orgs back in favour of a "it's all good!" attitude.

basically, i aim to be a "cadre in lieu of a party" for now, focusing my efforts on pragmatically working for revolutionary goals than on reproducing some sect that has been stuck in its ways for years and will likely never get the masses behind it