[Moto G Play (2021)] residentorca:
Thank you for the Hentai version, @Electimon. For those who wish to see what the install process looks like:

$ fastboot update hentai.zip
--------------------------------------------
Bootloader Version...: MBM-3.0-guamna_retail-1b6b9b39dd-220131
Baseband Version.....: HA10_29.11.02.95.01R GUAMNA_GWLC_CUST
Serial Number........: XXXXXXXXX
--------------------------------------------
extracting android-info.txt (0 MB) to RAM...
Checking 'product' OKAY [ 0.000s]
Setting current slot to 'a' OKAY [ 0.281s]
extracting boot.img (96 MB) to disk... took 0.298s
archive does not contain 'boot.sig'
Sending 'boot_a' (98304 KB) OKAY [ 2.376s]
Writing 'boot_a' OKAY [ 1.485s]
extracting dtbo.img (24 MB) to disk... took 0.076s
archive does not contain 'dtbo.sig'
Sending 'dtbo_a' (24576 KB) OKAY [ 0.591s]
Writing 'dtbo_a' OKAY [ 0.391s]
archive does not contain 'dt.img'
extracting recovery.img (100 MB) to disk... took 0.271s
archive does not contain 'recovery.sig'
Sending 'recovery_a' (102400 KB) OKAY [ 2.488s]
Writing 'recovery_a' OKAY [ 1.750s]
extracting vbmeta.img (0 MB) to disk... took 0.000s
archive does not contain 'vbmeta.sig'
Sending 'vbmeta_a' (8 KB) OKAY [ 0.001s]
Writing 'vbmeta_a' (bootloader) WARNING: vbmeta_a anti rollback downgrade, 0 vs 4
OKAY [ 0.011s]
extracting vbmeta_system.img (0 MB) to disk... took 0.000s
archive does not contain 'vbmeta_system.sig'
Sending 'vbmeta_system_a' (4 KB) OKAY [ 0.001s]
Writing 'vbmeta_system_a' OKAY [ 0.007s]
extracting super_empty.img (0 MB) to disk... took 0.000s
Rebooting into fastboot OKAY [ 0.001s]
< waiting for any device >
Sending 'super' (4 KB) OKAY [ 0.001s]
Updating super partition OKAY [ 0.067s]
Resizing 'product_a' OKAY [ 0.009s]
Resizing 'system_a' OKAY [ 0.008s]
Resizing 'system_b' OKAY [ 0.009s]
Resizing 'vendor_a' OKAY [ 0.009s]
Resizing 'vendor_b' OKAY [ 0.009s]
archive does not contain 'boot_other.img'
archive does not contain 'odm.img'
extracting product.img (2261 MB) to disk... took 8.659s
archive does not contain 'product.sig'
Resizing 'product_a' OKAY [ 0.008s]
Sending sparse 'product_a' 1/9 (262140 KB) OKAY [ 6.897s]
Writing 'product_a' OKAY [ 4.230s]
Sending sparse 'product_a' 2/9 (262140 KB) OKAY [ 6.864s]
Writing 'product_a' OKAY [ 3.208s]
Sending sparse 'product_a' 3/9 (262140 KB) OKAY [ 6.816s]
Writing 'product_a' OKAY [ 3.260s]
Sending sparse 'product_a' 4/9 (262140 KB) OKAY [ 6.875s]
Writing 'product_a' OKAY [ 3.253s]
Sending sparse 'product_a' 5/9 (262140 KB) OKAY [ 6.885s]
Writing 'product_a' OKAY [ 3.327s]
Sending sparse 'product_a' 6/9 (262140 KB) OKAY [ 6.916s]
Writing 'product_a' OKAY [ 3.276s]
Sending sparse 'product_a' 7/9 (262140 KB) OKAY [ 6.850s]
Writing 'product_a' OKAY [ 3.130s]
Sending sparse 'product_a' 8/9 (262140 KB) OKAY [ 6.840s]
Writing 'product_a' OKAY [ 3.216s]
Sending sparse 'product_a' 9/9 (218364 KB) OKAY [ 5.745s]
Writing 'product_a' OKAY [ 2.875s]
archive does not contain 'product_services.img'
extracting system.img (1158 MB) to disk... took 4.625s
archive does not contain 'system.sig'
Resizing 'system_a' OKAY [ 0.007s]
Sending sparse 'system_a' 1/5 (262140 KB) OKAY [ 6.806s]
Writing 'system_a' OKAY [ 4.280s]
Sending sparse 'system_a' 2/5 (262140 KB) OKAY [ 7.032s]
Writing 'system_a' OKAY [ 3.219s]
Sending sparse 'system_a' 3/5 (262140 KB) OKAY [ 6.891s]
Writing 'system_a' OKAY [ 3.233s]
Sending sparse 'system_a' 4/5 (262140 KB) OKAY [ 6.791s]
Writing 'system_a' OKAY [ 3.233s]
Sending sparse 'system_a' 5/5 (137744 KB) OKAY [ 3.666s]
Writing 'system_a' OKAY [ 1.986s]
archive does not contain 'system_other.img'
extracting vendor.img (495 MB) to disk... took 1.915s
archive does not contain 'vendor.sig'
Resizing 'vendor_a' OKAY [ 0.009s]
Sending sparse 'vendor_a' 1/2 (262140 KB) OKAY [ 6.797s]
Writing 'vendor_a' OKAY [ 4.309s]
Sending sparse 'vendor_a' 2/2 (245484 KB) OKAY [ 6.554s]
Writing 'vendor_a' OKAY [ 3.137s]
archive does not contain 'vendor_other.img'
Rebooting OKAY [ 0.001s]
Finished. Total time: 247.624s