“Just got to this” doesn’t really seem like a lie to me. If they said “just read this”, that would be a lie, but “just got to this” implies they didn’t have time to reply/think about it, without commenting on whether they read it. Honestly to me “just got to this” implies it’s been on their to-do list but they didn’t get around to it until now. If they hadn’t read it at all saying “just got this” or “just read this” would make more sense.