(I kept a copy of original wordle, and it seems to have 2,315 words that are possible answers.)
In particular, you have to consider the equilibrium. If you only allow a subset of words in Scrabble, this replaces the competitive advantage from knowing lots of words that no one uses in real life, with a competitive advantage from knowing the exact contours of the border between acceptable and unacceptable words. I would argue that this is even worse; at least if you learn lots of Scrabble words you're learning something about the real world.
By contrast, Wordle can self-impose whatever constraints they want on solutions, and people don't have to know what those constraints are in order to solve the puzzle. (It can help a little on the margin, which in a perfect world would not be the case, but it's much less of a problem for the puzzle-solving experience than the Scrabble equivalent would be.)