Removing microSD support has to be either pure greed given how Samsung makes its own storage or pure stupidity given the storage price rises we have seen.
The upcoming Galaxy A27 is said to bring a shift to the a punch-hole display and the Snapdragon 6 Gen 3 from the A26's notch and Exynos 1380. However, it seems like Samsung might've removed the microSD support and downgraded the ultrawide camera, suggesting a trade-off where modern software and platform changes are being offset by hardware cost-cutting.