Probably due to movies and tv, many people expect that an AI voice assistant can do a lot more than it actually can. Take for instance Star Trek, HAL, War Games, or even Rosie from the Jetsons cartoon.
The fact is that Alexa can do very little compared to the AI's seen in movies and tv. All of us in this forum already know that. But a large number of the general public do not. And for us, we don't expect Alexa to replace our smartphones, tablets, computers, or anything else. Alexa adds a bit of convenience when using those devices. For example, if you have Wemo or TP-Link light switches, you can ask Alexa to turn on a light for you. That's convenience. If Alexa didn't exist, then you'd have to use the app on your phone to do the same. You can ask Alexa for the weather and she'll happily give it to you. Otherwise, you'd use your phone or tablet and go to a weather website to get the weather. If you enabled the Domino's Pizza skill, you can ask Alexa to order a pizza for you. If not, then you'd pick up the phone and order it.
Is Alexa AI? Kind of. Can she do everything? Absolutely not! Not even close. Are the general public expecting too much? I'm afraid so. What's next? Be realistic in your expectations. The AI in movies and tv will come eventually.
For those of you who remember back in 1984 there was ARPAnet, but it wasn't the internet. Only universities and perhaps military installations had it. The internet and world wide web wasn't born until 10 years after that. Advanced consumer technology was a 300 baud dialup modem. 300 baud is about the speed of a fast typist. The leading manufacturer of modems was Hayes and their flagship product was the Hayes Smartmodem. It was "smart" because you can type commands on your keyboard to have it dial out and hang up without having to physically pick up a telephone handset and put it in a modem's cradle. It's amazing how far we've come.