It is almost always used alongside the --disable-verity flag to also disable dm-verity , which prevents the system from verifying the integrity of read-only partitions during runtime. Implementation Guide
Apps that rely on Play Integrity API (Google Pay, Netflix, banking apps) will fail. While Magisk can hide root, a disabled vbmeta leaves permanent traces that some apps detect. vbmeta disable-verification command
fastboot --disable-verification flash vbmeta vbmeta.img It is almost always used alongside the --disable-verity