I usually just smile and laugh because of stuff like that.
Sure it's more work on my end, but I've always seen strikes as competition. Not challenging in the slightest. Why? None of the strikes require teamwork in the slightest besides killing some enemies.
So if they want to try to snipe and get some kills? Congrats. Mine was 120 for Archon, your nearest was 30. I win, you lost. Loot? That's meaningless when I have Thorn and Ghjallarhon.