-What are the best games of the past 5-6 years?
-What is the state of D&D and Pathfinder?
-What's the OSR been up to?
-What are the best trends in tabletop gaming?
-What are the worst trends in tabletop gaming?
-What cool accessories or dice should I be aware of?
-Where are we buying our PDFs and books these days?
Best Games: I am not the best guy to answer this question. There are better people here for this one. Highest popularity is 5e D&D, Pathfinder 2, Cthulu, Starfinder, Cyberpunk, Shadowrun 6e, Star Wars, Alien.
State of D&D and PF: D&D is fucking HUGE. Like huger than huge. Possibly huger than it's ever been, including the heyday of 1e. Let by the popularity of a video steam of a game called Critical Role, masses of new people have flocked to playing it such that the average age of players is now in the mid-20s.
Pathfinder came out with a new edition, and it seems to have split their user base. So far, it's not clear if PF2 is a success. But, at least Paizo came out with another game called Starfinder, and that's making up some of the difference in their sales I think.
OSR - Seems to be going very strong.
Trends - Playing online. The pandemic has forced a lot of people to play on online platforms like Roll20, Fantasy Grounds, Owlbear Rodeo (which is the newest free one) and that sort of thing. In addition, there are a lot of streamed live D&D games making advertising money these days, like the previously mentioned Critical Role, and they seem very popular.
As for bad trends, I'd say the increase of political correctness is a negative trend these days. It's not nearly as prevalent as the folks here like to claim it is (it's genuinely not noticeable to the overwhelming majority of players of D&D and PF) but it is a nuisance.
Accessories: I do quite like the Roll20 online playing playform, and DND Beyond is a great digital platform for D&D where you can have all the books and character creation and that sort of thing. Lots of 3D printed dice out there these days some of which are cool.
PDFs: DMsGuild, which is a place WOTC built for third party writers to publish D&D stuff under a very lenient license, including opening up some WOTC campaign settings for anyone to write stuff for like Forgotten Realms.