im the only one hate people get first kill with unsync?

[Sylvina]

If they mandated first timers had to do all content synced, they would never experience any old raids or EX Primals. No one does Titan EX or Alexander Prime synced anymore.

Bingo correct answer here! It doesn't even MATTER whether people think they can tell others how to play because in the end making first kills sync only would be a stupid move on SE part.