Is the Christian community that John speaks of (see 1 John 2:19) in a more spiritual state than that to which Jude writes (see verse 4)?

This text is from a transcript of a talk by David Gooding entitled ‘The Glorious Gospel of the Blessed God’ (1995).

Because John says, 'The false teachers have gone out of ours,' and Jude has to say, 'Well, I'm sorry, but the bad boys have crept into ours', well it may be because the group to which Jude wrote was not being vigilant that this has happened, so it could be because they weren't so spiritual. On the other hand, be it noticed that the false teachers that John speaks of were already in the church, weren't they? And one would hesitate to attribute that to the fact that John and his contemporaries had not been as careful as they could. So I don't know that we must necessarily blame the people in Jude. Paul has to complain to the Galatians that certain men have crept in unawares, spying out our liberty and so forth. It was a trouble in the ancient church. It should remind us, I think, that being a member of a Christian church, formally and externally, is no guarantee that you are a genuine believer. So while we're not to be heresy hunting, we take it to our own hearts that we must make sure that we are saved.