Richard Henderson, a maintainer of the QEMU project, has recently made a significant decision to remove support for 32-bit host systems from QEMU. Henderson, who is ranked second in terms of the number of changes made in the project, published a set of patches in response to the deprecation of 32-bit host environments in QEMU 10.0 last April. The patches further removed support for the mips32 and ppc32 platforms from the TCG (Tiny Code Generator) code generator in the December release of version 10.2. You can find more information about the QEMU project and contributors here.
With the upcoming release of QEMU 11.0 scheduled for mid-spring, the plan is to completely remove support for 32-bit host systems from the TCG. This includes removing support for the remaining i386, arm, ppc, and riscv32 platforms. Additionally, there will be a cleanup of the code base and assembly system to ensure smooth operation on 64-bit hosts. You can read more about QEMU’s development and TCG here.