I believe lion city's pioneers very reluctant for change. (We all know it's true)
When I was in Mainland China for work. Even 70+ yo elderly selling street food/market accepts wechat/ali pay.
On the other hand, lion city's pioneers some don't even know how to use whatsapp, while hogging the ATM queue updating their 13 bank books.
Even if they release E-sim. While physical sim is still relevant. I think most people will stick to nano sim because why not lol. Probably only the youngsters, tech savy peeps & those who wants to use multiple sims/numbers will dive into E-sim.