This flag reports whether the device's IPFIX flow-selection function that simply selects every packet (rather than sampling or filtering) is available, and per the MIB's own description this trivial function is always supported. An admin checking this object is really confirming that a baseline, no-filtering flow-export mode exists before layering more selective sampling policies on top. Reading this object will always return true(1), since the 'select all' capability is guaranteed to be present.