IF Toyota is recalling them and replacing the engines I would argue that they are in fact fixing the problem.
Just like they did when they bought back 800K+ Tacomas because the frames were rusting out on the 1995-2005 models.
Unlike Ford or GM that basically told people to pound sand when things went wrong beyond warranty.
Nope. You're not going to get 300,000 miles out of a 2.4 liter turbo like you typically can with the venerable 1GR-FE 4.0 V6 engine.