This decrease is apparently due to Samsung renegotiating its investment plans. The plant was supposed to have come online this year but was instead left with a skeleton crew after Samsung withdrew its personnel. This was just one instance of Samsung clearly displaying a troubled foundry business.
With the new subsidy in hand I think it’s safe to say that Samsung hasn’t completely abandoned its plant in Texas. The new timeline states that it will be up and running in 2026. By then Samsung may have improved its 2 nm yields and it might actually be able to give its plans for 1.4 nm chips by 2027 a fair chance.
Samsung has had to abandon Exynos for the entire Galaxy S25 lineup. | Image credit — PhoneArena