I love Taiko no Tatsujin and the core gameplay, original music and charting of Rhythm Festival is still as fun and engaging as always. I will probably continue playing this game and keep going for 10 star FCs for a long time. However, at a 50€ price point with very few interesting game modes and a lackluster practice mode, it's difficult to recommend to people who aren't already taikopilled.
The PC is the completely wrong kind of platform for the features and game modes present in Rhythm Festival, which focus mostly on local multiplayer and are geared toward children and/or casual rhythm game players. Very few people who play on PC are going to bother with the local multiplayer/co-op game modes and I feel that the RPG game modes present in some of the 3DS/Vita/Switch games would have been a much better fit for the solo players on PC. Alternatively, Bamco could have stripped out all the superfluous game modes and sold it for 20€ or less, which would have made it much easier to recommend to others.
The online game mode is still as frustrating and poorly thought out as it has been since it became a staple of the series, with the lower rank difficulties being so trivial to clear perfectly that the victor is almost always determined by whoever can spam drum rolls the fastest (or cheat using macros). And even if you get out of easy/medium hell, you will be stuck playing against the same 3 players over and over, so overall it's not worth your time.
The main game mode is still as fun as ever (it's Taiko; what could go wrong?), and while the DLC is still overpriced and probably not worth your money, the music pass subscription service is great value. I've been playing for about 40 hours now and I'm still discovering multiple new fun songs from the music pass every day. I wish there was a proper practice mode with rewind and slowdown (like on Vita/PS4) rather than the half-assed practice mode that divides songs into 5 equal sections they included here, but oh well.
Edit: I forgot to add, the menus are also kinda ass to navigate, full of loading times and not geared toward PC at all. This wouldn't be a big deal in isolation but it helps cement the impression that this was a console game first and foremost and that putting it on the PC was an afterthought.