it takes a few goes to know, and they can be subjective. That is the point. With a consensus of many minds, a pattern can emerge.
One thing I found with the asteroid project was to say "Done & Talk". That way there are others who have opinions and you learn the syntax and what to look for. But I reserve the right to be wrong.

There are experts that can pronounce on the subset that have made it through the Citizen Science. & those experts become far more efficient.

Another factor is: Elon Musk, Jeff Bezoz et al are about to release up to 20,000 satellites to give the world free internet (receivers, sold by you know who, will come at a cost and collect your data). Imagine trying to read road signs at speed through a line of speeding contra-traffic.

Currently there are 2,000 satellites. Now is the time to do the asteroid search. But there are plenty of other projects on the website.