generally the rules prevent torrents from becoming incomplete
usually theres a request system, which can be very useful for old or obscure stuff.
usually much faster for all but the most popular stuff
way more timely and consistent. Less problems where it takes a few days after a release for it to show up or for a series to stop being uploaded half way through a season.
less chance of honeypots or other malicious behaviour (you should still use a VPN though obviously)
more consistent quality and naming enforcement (which means it usually works better with *arr)
I can't vouch for this particular tracker but in general (free) private trackers are very nice.