So whatever people say and critics 20-30 hours of great entertainment is very good IMO.
Exactly the point.
The problem with all the people ITT complaining recently is that they've just overplayed it (mind you, I've overplayed it too for the sake of my channel so I feel that way too). I won't say that its design is brilliant (it's obviously flawed and repetitive), but it has at least a dozen or so of viable and different party combinations and 4 different areas to test those setups. 20-30 hours should be enough to run them all through green & orange dungeons (ignore red - they are a carbon copy of orange, just with the numbers being stacked against your favor; they don't add anything fresh to the game). MB a bit more, but no more than fifty, that's the absolute threshold.
And while this period of experimentating & exploration lasts, the game is pretty cool. Yeah, after that the charm breaks off, but it's not like its that expensive - even before the release you see the 33-40% discounts for it and after release it'll soon get even lower than that. Sure, the authors may promote their game heavily, but should we judge them for, essentially, not being dumbfucks?
Yeah, theoretically, it could've been something absolutely different. But then, it's not like everything needs to be an eternal masterpiece. Not in my opinion, at the very least - I'm fine with things being good for what they are as it's the case with DD.