What work? You just click to roll the dice and handle everything analog like you would at the table. A character sheet that automatically calculates things and has a button to press to roll this skill or that attack absolutely is a helpful extra.
Nah. It dramatically speeds up play compared to trying to play analog in a virtual environment, especially if you have one or more players who don’t know the rules that well.
The paid stuff is some of the best money I’ve spent on the hobby - and it’s a hobby that offers a lot of value, so that’s saying something. Character builder, premade tokens linked to NPC/monster sheets, dynamic lighting…I consider all that stuff “core” these days. Hard to go back to the Dark Ages.
Different strokes, but for me, digital rules.