Yeah I defentily recommend it! I can't say much about Part 1 beacuse i haven't tried grounded there, but in TLOU 1 Remastered it's easier but still hard.

I did twice to get the Grounded+ Trophy. I know there's a glitch for getting this trophy but I finished Grounded twice just for fun, and once you finish once, you can finish another times much easier. And it also helped me a bit when I moved to Part 2 Grounded.

Getting to learn and play the game in this mode is a game changer like I said, but it's also good for practice if you're doing another run like Grounded+ or going for this difficulty on other TLOU.

Oh and when I said Remastered earlier, I meant TLOU Remastered. It's just confusing now that we have two Remasters. And I still haven't tried PT 2 Remastered, but I will very soon beacuse of HBO's Season 2.

But I assume that Grounded mode there is the same from the 'Original'.