> The blog post has no details and the overuse of adjectives to describe the attacker as extremely competent sounds more like an excuse for their own weaknesses

This was precisely my read of it as well. Exaggerated usage of superlatives coupled with no actual explanation suggests trumping up an adversary's capabilities to excuse one's own security lapses. Like claiming a highly sophisticated burglar broke into your home, while neglecting to mention you left a window open.