Earlier quoted context omitted.
Honestly if someone were to send me a message that only required a simple acknowledgement, and that person hypothetically had disabled reactions, I would interpret that as that person not wanting their message to be acknowledged. But I suspect what you’re really wanting is typed acknowledgment?
I don't want my messages acknowledged, it's just The Generals Problem. I assume you've read it and understood it, if you don't understand or agree, let me know, otherwise don't waste my time, I don't need people to say Thanks, you're paying me to do it
You’ve replaced “read” in the first part with “agree” in the second, and those are not at all the same thing. I can’t let you know that I haven’t read your message.
If a parent says to the other “hey, I’m running late, I need you to pick up Tiny Tim from school”, an acknowledgement is paramount even if you read, understood, and agreed to the message.
> it's just The Generals Problem.
That problem is concerned with an unreliable communication channel, which does not apply to the situation.