Thank you, but no. Why not? Serious problems with back doors. The Intel Management Engine (ME) is included in these machines. The ME from INTEL and AMD is in the platform controller hub of almost all modern Intel motherboards, i.e. on the entire range of devices on the market. 
Why use the Raspberry Pi 4? The Raspberry Pi 4 is not affected by the Intel Management Engine (ME). The Raspberry Pi 4 uses an ARM-based processor, specifically the Broadcom BCM2711 SoC, which contains a quad-core Cortex-A72 (ARM v8) 64-bit SoC.
This is a serious but hitherto underestimated topic that has been completely ignored by the mainstream.