Tony Vargas
Legend
Yes. That's about the only difference between 5e and 3e as far as TotM vs grid support is concerned. 5e tells you to use TotM, 3e doesn't label the use of a grid 'optional.'I agree with the OP: ToTM is perhaps the major drawcard of 5e for me. It's the default as far as I understand it. The grid etc are optional rules in DMG aren't they?
Biggest factor for me used to be the availability of a play surface. When you're in college and a studio apartment is the only place you have to run a game....I have generally found that which one I use depends heavily on the scale of what's going on. Flying over the treetops in an airship? ToTM. Engaging in a fight with a hundred foes? ToTM. Fighting a single enemy in an enclosed area? Minis and map. Exploring a town? Pre-made maps are helpful for both sides, often such maps can be purchased from your local travel agency so I don't have to keep reminding everyone where everything is!
But, yes, TotM is good for scenes where you can't capture the scale of movement on a play surface - chase scenes and the like. It's also OK for quickie combats that you don't expect to take more than a round or two to resolve, and for single-monster beatdowns where everyone's either going to surround it or keep their distance and there's nothing the victim can do about it. Any combat with a little depth or complexity becomes easier to resolve with some visual aids, though. Even systems that do mechanically support TotM can benefit from some abstract use of minis/counter/whatever and a 'map' showing relative positions or range bands or whatever.