The other Challenges were suspended only during the Sourcing part of the games, because that part has to use the Challenge Tracker. I am pretty sure they are also suspended during the Source a Thon, which will be coming up at the 'end of September', so get your sources added earlier, if you want to be counted for Sep totals!!
For Connect a Thon, which is Saturday, they don't use the Challenge Tracker, so the Challenge Tracker being back had nothing to do with anything other than they were done with the Sourcing part of their Game. I am with all of you that there are way too many games on wikitree lately. Starting with this 'game weekend', there will be three months of a 'game' format!