@mgm230 The Legacy Edition's limitations were described in a number of places, including here:
https://answers.ea.com/t5/General-Discussion-Feedback/The-Sims-4-Update-on-Supported-Systems/m-p/7629115#M11425
Specifically:
Will The Sims 4 Legacy Edition receive any additional content or bug fixes in the future?
No, The Sims 4 Legacy Edition will not receive any more content or bug fixes.
Do online features still work in The Sims 4 Legacy Edition?
The Gallery, game banners, and social integrations are disabled. The Sims 4 Legacy Edition will not display or allow any purchases of content released after the update happens.
What Stuff Packs, Game Packs, and Expansion Packs can I play using The Sims 4 Legacy Edition?
You will be able to purchase and play all Stuff, Game and Expansion packs released between September 2, 2014 and September 10, 2019. This includes Luxury Party Stuff Pack, Perfect Patio Stuff Pack, Cool Kitchen Stuff Pack, Spooky Stuff Pack, Movie Hangout Stuff Pack, Romantic Garden Stuff Pack, Kids Room Stuff Pack, Backyard Stuff Pack, Vintage Glamour Stuff Pack, Bowling Night Stuff Pack, Fitness Stuff Pack, Toddler Stuff Pack, Laundry Day Stuff Pack, My First Pet Stuff Pack, Moschino Stuff Pack, Outdoor Retreat Game Pack, Spa Day Game Pack, Dine Out Game Pack, Vampires Game Pack, Parenthood Game Pack, Jungle Adventure Game Pack, StrangerVille Game Pack, Realm of Magic Game Pack, Get Together Expansion Pack, Get To Work Expansion Pack, City Living Expansion Pack, Cats & Dogs Expansion Pack, Seasons Expansion Pack, Get Famous Expansion Pack and Island Living Expansion Pack.
The Legacy Edition was never supposed to make anyone's game better. Its purpose was to provide a way for people to keep playing Sims 4 after the extensive update that would no longer support many older systems. The current version of the game doesn't run at all in a 32-bit version of Windows or on a non-Metal Mac, but the old version does, so EA has kept the old version available as the Legacy Edition.
I agree that Origin could be more discerning in which players it tells to download the LE. But as for people never being told what the LE meant, the information was readily available to anyone who cared to look.