There is no doubt the WT writers are making the most of this story. I have to believe many thoughtful readers will see the 4th century Eusebius quote describes a 'revelation', a divine vision, given to nameless 'approved men'. Whatever you make of the quote, this hardly fits the WT narrative. Or are they yet believing that personal revelations are occurring, and they alone are the recipients?
They also are 'quote mining' as Epiphanius about the same time credits the escape to an 'angel' delivering a message. That certainly does not fit the WT narrative. Anyone claiming to receive angelic messages or revelations today not only would be removed from the church they would be directed to a mental health clinic.
This has been a topic for a few threads lately. In short, the flight to Pella legend cannot be confirmed, nor can it be claimed to fulfill anything from the Gospels. The Marcan writer/redactor likely drew from recent history for the 'flee to mountains' motif. Famously:
1 Maccabees 2:
6 When he observed the sacrilegious acts that were being committed in Judah and Jerusalem, 7 [d]he said: “Alas! Why was I born to witness the ruin of my people and the ruin of the holy city, and to sit by idly while she has been delivered over to her enemies, and the sanctuary given into the hands of foreigners?....28 "Then he and his sons fled to the mountains and left all that they had in the town."