I only use the rewards on Xbox and on my phone, so this 6 seconds "cooldown" between the searches is incredibly annoying. It shouldn't be applied on the Xbox console, since I don't think that is possible to cheat there.
They're nerfing the points a lot, a couple of months ago it was possible to daily get 75 points by just starting Fortnite on Xcloud, I used to get almost 400 points per day using only my phone and the console. Today I can only get around 200 points per day.
Also, I hope that the new xbox rewards hub is good, the current one sucks.