This is just my speculation, in terms of technology i don't think Singtel infrastructure lags behind M1 but why is it Singtel is not listed by apple as a esim supported telco? There's some prior implementation of esim for watches/Android but so far ST and SH is still not listed as an iphone esim supported telco why is that so? The only thing that comes to mind is license which apple is well known for. No pay license, then no support.
i dont think that is the case.... if there were licensing fees, there would be articles about it. Lets not forget, sometimes companies like ST and SH also do have vendors that take care of certain implementations. The initial release of e-SIM for watches should be purely for tagging on to the primary SIM if i am not wrong, to make it as a standalone, it could potentially be a new CR that needs to be implemented which will also take time.
Yes you are right, Singtel does not lack behind in terms of infra, but Singtel is always the slowest in the terms of picking up market trends. Singtel has always has this posture of letting others chut stun then they react. Starhub is almost the same but with the current restructuring, i believe they prioritizing their launch of the new plans and customer service.
People are upset about the $37+ that m1 is charging, but dont forget if u lost/damage your sim,
its the same charges that you are paying and there already have been couple of instances where m1 is waiving the charges. Its just the $5 activation fee which is in question here.