On Linux, however, I do not see much benefit, unless you frequently install large binary C library based packages.
To me it feels cleaner to compile these packages from source. You are sure to have no glibc mismatches etc.
Conda, despite its advertising, does have library issues. C Libraries are shared between environments, compiling inside an environment can lead to surprising results when stale libraries are in the miniconda path.
All in all, it feels like a second OS shoehorned into the user's home directory. Compared to apt-get it is really slow and bloated.
It feels too intrusive on a Unix system.
Also, I'm not sure if the repositories are secured in any meaningful way.