Fine. Is "10-4" or "copy that" or "Roger" acceptable? Because the whole point of that text, in a work context (and this is always a work conversation; I like my partners but I'm not personal friends with them), is to convey "I have received your message". And a reaction generates an SMS that is, until you realize what it is, kind of incomprehensible. "Loved '[my comment]'" makes no sense when you get it as a long comment.
> The reactions may not help you
I have trouble seeing how they help anyone. You made an obvious joke. A guy who laughs at anything reacts "HA-HA!!" or whatever. What is the contribution? The youngest member of my partnership is 40, though we do have a 33-year-old joining in a few months.
This isn't "get off my lawn", much as I do love that. It's "explain to me how it's useful for actual minute-to-minute work". I'm a physician. An anesthesiologist. I never know when the next emergency will arise, but OTOH we don't go for a sterile cockpit approach because there are a lot of conversations that have to do with the running of the day at work that aren't entirely serious (and don't involve patient care, as such; that's why we don't use the sterile cockpit method - it's more about figuring out who can let whom go to lunch, becuase you can't just leave someone under anesthesia to go eat, or how we might be able to let Dr. X operate in about an hour - personnel management is the biggest part of my on-call duties).