With spock retirement, splashutils became orphan. The problem is that it
has a lot of unresolved bugs for a long time:
https://bugs.gentoo.org/buglist.cgi?quicksearch=splashutils&list_id=1521218

that would need someone with more knowledge about it to maintain it (as
I don't have splash on my systems for years).

Also looks like splashutils is no more developed, but I don't know if we
have a proper replacement for it in gentoo (most distributions are
moving to plymouth, but I haven't tried if it works ok on Gentoo)

Thanks for your help