Logging should be configurable by users, who control log behavior using their desired log appenders and log configuration. We should not be making decisions in code which affect which items are logged. We should just send the information to the logger to let it make that decision.
This is also unsupported by slf4j, which gives users better control over their logging.
As such, we should remove (and deprecate, as needed) code which alters the log level dynamically.