There's a strong objective trend of every single ideology failing to gain ground because of sectarianism. Even Lenin in what is to be done advocated against pluralism amongst comrades but in the writing advocated working w every bloc that had an interest against the tsar.

And particularly if the conditions within ur country are not imminently revolutionary there is absolutely no use for sectarianism as a principle that isn't in practice just telling people to fuck off for being actively detrimental.