I once dropped a toothbrush down the sink. Normally sinks have a catcher mesh installed but we had to remove ours as a quick fix for it leaking. I dropped it perfectly and shoop it’s down the sink. I did fish it out because it hit the ubend and stayed there but I threw it away and got a new one lol. Everything was fine for years though, it was an extremely rare shot for it to go down and not just lay flat in the sink.

This is not helping. I too grip my phone and keys and stuff going over scary things like grates!