uninstalled and reinstalled, same result...
steam.sh[9067]: Running Steam on solus 4.3 64-bit
steam.sh[9067]: STEAM_RUNTIME is disabled by the user
steam.sh[9067]: Error: You are missing the following 32-bit libraries, and Steam may not run:
libc.so.6
steam.sh[9067]: Can't find 'steam-runtime-check-requirements', continuing anyway
ERROR: ld.so: object '/usr/$LIB/liblsi-intercept.so' cannot be loaded as audit interface: cannot stat shared object; ignored.
/home/glenn/.local/share/Steam/ubuntu12_32/steam: error while loading shared libraries: libdl.so.2: cannot stat shared object: Error 75
edit: reinstalling 32-bit packages seems to have fixed it
https://discuss.getsol.us/d/3938-32-bit-libraries-libgl-so-1/6
sudo eopkg install --reinstall $(eopkg li | grep 32bit | cut -d " " -f 1)