So often we look to Paul’s word of pointing out…

So often we look to Paul’s word of pointing out the error in some mens teachings

But what about these scriptures:

Luke 9:49-50
John answered and said, “Master, we saw someone casting out demons in Your name; and we tried to prevent him because he does not follow along with us.” But Jesus said to him, “Do not hinder him; for he who is not against you is for you.”
—
Philippians 1:15-18
Some, to be sure, are preaching Christ even from envy and strife, but some also from good will; the latter do it out of love, knowing that I am appointed for the defense of the gospel; the former proclaim Christ out of selfish ambition rather than from pure motives, thinking to cause me distress in my imprisonment. What then? Only that in every way, whether in pretense or in truth, Christ is proclaimed; and in this I rejoice. Yes, and I will rejoice,
—

Should we rather all the more give glory to God that Christ is proclaimed none the less?

Being as though this has to happen:

Matthew 24:14
This gospel of the kingdom shall be preached in the whole world as a testimony to all the nations, and then the end will come.
—

Shouldn’t we be preaching more ourselves?

Are not even some of the “false teachers” still preaching the gospel of the kingdom in some sense of the term, being as though the end is nigh?

Just looking for some feedback on this. Just curious what your thoughts are?