Is that what you do at work, load up your poker face and try and hide all your emotions? I don't think that's what most coworkers would want to do so I don't see that being a problem. People will know if you're not hooked up for real, no bot will fool a human unless there's real AI behind it. You can tell when you're up against another person vs any bot.
Yes it does matter. It's presence, and the interactive responsiveness between participants. Loading a script / playing a script won't have that. What you're describing will be the new bot, and identifying them will be like having street smarts.