I don't know the release policy of the fpc team for the compiler.
The Lazarus distro contains a native 3.2.2 fpc win-64 compiler.
However, indeed that compiler was not build by the fpc team. It was build from the sources that are tagged 3.2.2 in the fpc git repo, and build directly for the Lazarus distro.
It should otherwise be the same.
Though there may be slight differences in the flags used to build it (and the RTL). See the file lazarus\tools\install\win\build-fpc.bat in the Lazarus distro.
It specifies -CX -XX -Xs for some parts of the fpc build, which I don't know if they are on by default. (That is for smart linking)
A possible (though maybe not / I don't know if...) advantage of the Lazarus build is that the fpc.exe and ppc___.exe are code signed. Maybe (or maybe not) that appeases Windows Defender?
In the past, I have seen Windows Defender become suspicious if a project was recompiled several times in a short time, resulting in a constantly changing target exe. (Which the Defender would then delete...). I don't have enough data to determine if that is less likely now.
Mind you, with the Lazarus distro you will also find cross compilers. Including a cross compiler that builds 32bit exe. (64 to 32 bit).
That actually does not exist, because a 64 bit executable can (on Windows) not (safely) perform extended float. But building a 32 bit exe, requires support for extended.
That cross compiler is actually a native 32bit compiler, but disguised as cross compiler, so the IDE can call it as such.