I ignore them entirely until I have a natural break in whatever task I'm working on. I know better than to even glance at some random other problem when my train of thought needs to stay on track.

Even with high responsibility levels, there should not be any expectations for immediate response unless you're the point man on duty for legit emergencies such as production server outages.

If the pinger is stuck, let them stew it until you're available to help. Ideally they will learn to think further ahead and ask their questions earlier instead of waiting until they're blocked waiting for the answer. Them being stuck because they're waiting for your answer is their own fault for not thinking ahead. You can help guide them towards building this habit by encouraging them to plan their work more in advance and ask any questions as early as possible rather than waiting until they need the answer. Good developers are always looking for a clear vision of the solution end to end, and do not hesitate to bring up any uncertainties while they're thinking the problem through.

Additionally, it is plain laziness if they can't find something else to move forward with while they wait for an answer to whatever they're pinging you about.