Basically if the motion is properly approved then it is legal. The motion has to be approved at an AGM and the person (chairperson) must specify in their nomination to be on the committee that they will be entitled to the said remuneration and a breakdown of the remuneration must be supplied to all owners prior to voting the chairperson onto the position.
18 Requirements for nominations (for committee)
(2) A nomination must contain each of the following details—
(e) details of any payment to be made to, or to be sought by, the candidate from the body corporate for the candidate carrying out the duties of a committee member.
This is from Body Corporate and Community Management (Standard Module) Regulation 2008
It’s available online for download
and Body Corporate and Community Management Act 1997
It actually beggars belief that owners would actually vote to give away 21K to a person when you are already paying a SM to effectively do the same thing. You need to do a mail out to ALL owners telling them they are going to be ripped off if this goes through.