Play games
Choose the game that interests you and play itfor free.
Complete the quests
Every game has some quests for which you will receive Soul Gems.
Receive rewards
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
It seems to me that in the last few posts the author of the thread has moved away from the original topic and delved into another... Personally, I have nothing against such awards for users, as well as in some ways I understand why there are several moderators or editors in the top list. In any case, even having its being removed will not fundamentally affect the situation related to the current update, 7-30-day restrictions and the number and availability of tasks related to it.
The situation with the 7-day restriction could be at least slightly modified as follows: each completed task adds 6-7 days of activity (or a shield, or ordinary daily bonuses, you can may call it whatever you like) instead of just updating the counter. This is just a fallback in case if the problem with the variety and availability of tasks remains the same. But naturally I doubt that such a compromise will be considered.