Deprecated doesn't mean kill, and if you're still using RC4 in your infrastructure no matter the size, it's on you, work harder and get rid of it no matter how hard it is, alongside anonymous ldap bind, SMBv1, NTLMv1, DES, unsigned traffic for any protocol, TLS 1.0/1.1, Digest, and so on.
Deprecated doesn't mean kill, and if you're still using RC4 in your infrastructure no matter the size, it's on you, work harder and get rid of it no matter how hard it is, alongside anonymous ldap bind, SMBv1, NTLMv1, DES, unsigned traffic for any protocol, TLS 1.0/1.1, Digest, and so on.
It'd actually always sort of impressive, how much they can't deprecate or remove, because some big customer refuses to update their application!