Old topic, but I understand where they’re coming from because I see some of the same issues.
I don’t think the OP was asking for an all or nothing binary choice for a newsletter, they were asking for individual settings per game. If they only care about PF2e, news about Vampire feels like spam. Since most games are not within their interest, they’ll probably unsubscribe because the signal-to-noise ratio is frustrating.
As to matching, yes, anyone can create a game listing, and many have. On the PF2e list alone, there are a lot of games with engaging names like ‘test’ and ‘000’ which will surely attract players and launch any day now…
…Or, more likely, won’t.
Even with games that look to be honest attempts to put together a group, I don’t see any way to tell when they were posted so I can guess whether the creator is still actively visiting their posting. As an example, there’s one which I asked the GM about several months ago, and I can’t tell whether they ignored the question, never saw it at all, or put a group together by other means and didn’t bother closing the post here. At the time, the posting could have been long-abandoned, but how would anyone know it was a waste of time?
There should be some way to sort the list by creation date, or better, by last activity date. There should be an automatic timeout to clear the useless ‘test’ chaff. Even if a GM isn’t creative enough to come up with a decent name, they should at least need to visit the post every couple weeks to refresh the timer.
We should at least have a way to hide postings which are apparently dead, only a ‘test’, or just not interesting. The only GM I’ve actually heard back from so far was just using their game posting for content sharing, so it was a paid game which only looked free.
We should have a setting on our profile saying what range of prices we’d consider for paid games, with a floor of zero and a cap around 50 to prevent price-changing fraud that could be disastrous (someone could set their price to 20.00, gather players, and then switch it to 2000, hoping to catch someone who can’t see the listing well due to limitations of screen size or visual acuity.
There should be numbers by the settings for our interests in Player-Driven, Puzzles, etc., and they shouldn’t reset every time we open them to make an adjustment. Alternately, there could be a reasonable 5 or 10 point scale, since no one can visually tell the difference between a 33 or 35 on the 100-point slider (I can count presses of the arrow keys to know exactly where it’s set, but that’s annoying and there’s no utility in that precision. 100 points of precision only serves to annoy people who are attentive to detail (if not fully OCD), but if you believe the difference between 50 and 51 is valuable information in this context, at least put a number beside the slider so 25, 33, 67, and 75 are as easy to set as 0, 50, or 100.