Debate & Pressure to Ban
Some experts — e.g. from the Hong Kong Institution of Engineers (HKIE) — have publicly argued for a ban, citing difficulties in uniformly assessing safety of bamboo scaffolding (variability of bamboo, weather vulnerability, higher risk over long-term use).
RTHK News

Others — notably workers’ unions — oppose a ban, arguing that many accidents stem from poor workplace management rather than bamboo itself. They warn a ban could threaten thousands of jobs.

PS: They rather listen to a bunch of lowly educated contractor worker union than the highly educated & trained Institution of Engineers?

Yes - but it didn’t go up overnight. It was there for a long time, same as the flammable seals on the windows etc etc. Many people saw it, were aware, what checks were made by ………… all the stakeholders who had public safety concerns? WHO failed in their responsibilities?
It was a significant contract - @ HKD345m I think - so the investigation of the procurement process and contract agreement will be interesting, and damming. As the residents were paying for it there’s reports on their dissatisfaction with the process and, even before the fire, the outcomes.
Of course everyone, including here, wants it cheaper - I know how MC procurement decisions are fought over tooth and nail, for savings; we’re all tuned now to expect more for less, so it will be good to find out what minimum standards and fire laws were breached.
I’m not familiar with the governance and accountability for this type of building in HK but the list of actors involved will be large I’m sure.

that bamboo scaffolder union is very powderful in hong kong

some say got link to underworld