Laying off or reclassifying supervisors to be technicians is reasonable in my view. This allows budget to be rightly allocated. Organization needs to purge out these leeches to save worker bees.
Those pioneer batch of supervisors all have higher salary (above market rate), fully paid HDB/private condo/JB property (some bought SG landed due to booming O&G era), driving cars, eaten many hotel buffers, business trips in business class flight WHILE the younger generation need to work their a-s out to help company pay off the debt and accumulate cash. In addition, all they do is to delegate tasks (downwards to technicians or sideways to engineers) and collect status for reporting.
Younger generation supervisors are no better. Those good ones remain as anchor for their reporting organization. Those promoted ones are usually those with connections/play dirty/lucky fellows. True or not, leave it to you to judge.
I would advise young poly grad to work elsewhere. Don’t waste your time here anymore (company need to pay off debt/put money on better investment than paying you first). Think about it yourself.
What we see today, is telling us company do not treat employee as an asset and we are expendable at any time (what happen if you at 40s to 50s but haven’t fully pay your 4 bedroom HDB unit?).