FAQ says, see What has changed in SLF4J version 2.0.0?:

SLF4J 1.7.x and earlier versions relied on the static binder mechanism which is no loger honored by slf4j-api version 2.0.x.

The static binder classes were removed in remove org.slf4j.impl package - fixes SLF4J-407

But *Binder interfaces are not removed and not deprecated.

PR https://github.com/qos-ch/slf4j/pull/299