All android version after eclairs have this feature. Does it use touch wiz or one ui? One ui 2.0 has this feature.
Realme is actually more shady brand. They will provide updates which slow the phone, and often contains bloat.
If you disable notification for some bloatware apps like browser, it gets automatically enabled, and shows adverts and some not good content in notifications.
The last update which they gave, i.e. realmeUI 1.0, had so many bugs. It was not at all optimised, and using even whatsapp was pain, as it hanged a lot. The battery consumption also increased.they did not made any bug fix patch etc. And left us like that. I could not use custom rom, as it does not support fp lock and 4G network. This happened because realme has given broken source code.
Ngl, realme is the shittiest brand I have ever seen. Once the phone is sold, customer doesn't have any value.
Instead nokia or moto doesn't do all this, and they have high quality roms. So they are more reliable.
Afterall, realme is nothing but another oppo or vivo.