Looking at all the features that older phones uses to have compared to newer ones, I never hear anyone talk about the removal of the notification LED. I personally really liked that feature, being able to see if I got an email, a text or missed a call without turning on my phone was awesome. My Samsung note 8 had this feature, but to my knowledge, newer phones (in the major companies anyway) have abandoned this feature. Did everyone else unanimously agree they don’t care for this feature?
I like notification LEDs, but I don’t use them for notifications. Instead as a battery/charging indicator.
For notifications I have Mi Band. This allows me to always have my phone on silent.
Fun fact about one phone I have: The Moto G5s Plus does have a notification LED, but there’s no way to use it with stock ROM. The hardware is there, but it’s not used. I am not sure what weird decision has led there. Anyway, it can be used in PixelExperience (custom ROM).
I think there were multiple Motorola phones that had the LED unused in stock ROMs, which makes me think it was a patent/legal issue, rather than an engineering decision.