I may be asking for much, but wouldn't it be more appropriate if the user had the option to choose not to display any activity at all? For example, if you were inactive for 73 hours, display "(Not recently)" instead of "June 09, 2024, 08:40:33 PM". Or just "(Hidden)" regardless.
Someone might want to take a break without letting anyone know about it.
I was even about to ask the same question, because it will really make more sense if someone can just turn off their activity status and leave it offline until you decide to remove it from their account.
Even if you just make a post, people can only see the last time you made it, but your last active hour and time won't be visible even while you are online. It's a very common feature that is being used on some of the social media sites where it's active to enhance members privacy a little bit.