Definitely, you're right that new timeframe doesn't matter, I meant to type hot all time xD I would expect that to potentially grab like whatever was boosted most in the past but then again the algorithm does tend to show newer things even under hot.
Yea the tag system might need a bit of work. It works great for some magazines, but for others not so much. For example m/help is supposed to be a magazine for kbin help but it pulls in everything under #help which can be anything in the fediverse. I did see someone suggest a way for a magazine to remove it defaulting to using the tag of its name, which doesn't seem like a bad idea to me