There's a new version of File::Slurp on CPAN.
It looks like a lot of bugs are getting fixed.
genio's current efforts are mostly to fix the obvious bugs and problems with the module's packaging and testing, and fix it for Perl 5.30 which will make sysread on :utf8 handles fatal. For new users, the only real fix is to add a new incompatible API alongside the current badly designed one (as the File::Slurp::Tiny experiment discovered, resulting in File::Slurper).
Perl user since about 2006, I have also released some CPAN modules.