Maybe I’m just a stickler for expecting people who earn a commission to do their job.
Aside from that, for those who are not familiar with the various brokers Fidelity has a comments section on their offer form. Apparently the agents don’t see those comments (according to three different agents from there) So even if you add “expires in 48 hours, they don’t see it and they don’t really care.
My point is, it’s not my job as a buyer to do the work of an agent or a seller. If you don’t want to respond, no problem. Lots of supply out there. Want to hold it against me? No problem. Lots of supply out there. However agents are licensed. One complaint to FREC can resolve many of these issues.