Personally, I’d argue that Warframe is “grindy”, but that’s OK because the grind is the game. You’re always grinding for something, always working your way up one of the various progression treadmills, but that works because a) the gameplay itself is fun, so you’re not just clicking buttons to fill bars, and b) there’s such a huge variety of different things to progress and different ways to progress them that you can never get bored or feel like you’re being forced into certain content to move forward. You always have the option to just switch to something else. Warframe is a massive all you can eat buffet of gameplay and you get to decide exactly what you want to take from it.