“If it is labeled as an ‘attraction’, shouldn’t there be enough info on why that is so?” Yes. I think so.
“Given that POIs don’t actually have strong incentivization directly, it seems petty to block me from doing systematic and good work for sake of beating me to the pass.” They can’t block you from creating a better POI. That’s the beauty of the design. You can create a better one right there. Straight away.
“So is that grounds for a challenge?”
I would say, 100%, Yes.
“And should I then submit my own and better POI?” Yes.
“Also, challenges take a week. POIs take a few days. Is it standard practice to wait till a challenge is concluded to register ones own POI?” I don’t think that is necessary.
Right now there is no incentive to create a POI first. And I say it often; “First is not better. Better is better.” Be better. Be your best. It helps everyone and everything.