Show us the "attack" words. If you ever had a neighbor where you were concerned about their spiritual lifestyle, and raised an issue about their spiritual direction, I don't see that as "attacking" (automatically anyway). Especially if you're raising it about the spiritual group that person represents, and the larger Q about the eternal destiny of that group.
For some people raising the issue, it might reflect a sense of urgency; not attacking. It may reflect concern, much like God expressed concern about the people group He sent Jonah to witness to...Jonah, in proclaiming repentance, wasn't "attacking" the people group...(And here, he actually did despise the people he was sent to because of their track record of utter ruthlessness)
It may be that you have missed the point.
The comment regarded those who do attack. The comment does not apply if there were no "attack".
Nevertheless, I repeat the observation of Harold “Kim” Philby, famous Soviet Spy, “To Betray you must first belong” . He implies that stealth attacks will be more successful. Tyranny always appears first as a benevolent power to protect you.
View a Couple of These Videos to see how it works.
The attack is in the timing and the posting of this kind of divisive nonsense.