DMC3 is definitely more hardcore (though still far easier than Ninja Gaiden Black and Ninja Gaiden 2) but once you understand the mechanics and find a playstyle that works then the only “evil” part of the game is Dante Must Die difficulty (which is clearly intended, ever since the first DMC game). That was the big appeal of DMC3, it gives you so many options to make Dante play how you want, and while it made it’s difficulty clear (even seemingly taunting players with “Easy Mode is now selectable” if they die 3 times in the game) it eventually opens up and becomes far less intimidating than when most people first played it. Like anything else, it becomes easy with enough practice (except DmD, that an expert’s only mode).
Also I disagree with DmC Reboot on several points. The combat was too easy, the weapons were good but generally inferior to other games, the characters are not as well written, and the story was full of plot holes and awkward symbolism. It was also too reliant on platforming setpieces for my tastes. It’s still far superior to DMC2, because it actually knows it’s an action game and not a boring shooter like DMC2 was, but I felt it was just inferior to even DMC4 (a game I really began to dislike the more I played it).
Also Itsuno did want to made a sequel to the DmC Reboot, but Capcom forced his team to make DMC5 instead. I think he could have made it work to be honest, the reboot had good ideas that could have been greatly refined under Itsuno’s direction, as DMC5 has now proven.