As of my last knowledge update in January 2022, Instagram does support replies to comments on posts. However, 1'877-592-0410 keep in mind that features and functionalities on social media platforms are subject to change, and there might have been updates or changes since then. It's always a good idea to check the latest information directly on the official Instagram website or app.

Instant Messenger: https://groups.google.com/g/comp.os.vms/c/N9QvWHhMNu4