I can understand why people familiar with DnD mechanics and setting would find it easier to get into BG3, but they're certainly not easier to learn. You have 4 separate tabs of actions, loaded with different icons (half of which you probably won't use). I've played 5e for years and even I found it pretty cumbersome, especially when 90% of the time your best option is just to press attack. Now that I say it though, maybe that's why it's easier. Divinity's armour made sure you engaged with a variety of different classes and abilities whereas you can go through BG3 just whacking everything on the head and ignoring all your abilities. I'm glad they reached so many people with BG3 but I hope they go back to great tactical combat in the future