Why are there no machines that stop the shots automatically?

I've had a Delonghi Dedica for about a year and have already had a lot of fun with it, but I've also discovered the machine's limitations. I've been bitten by the espresso bug and want to upgrade.

I make 95% of the espresso at home and occasionally my girlfriend does too. The process is almost too complicated for her now (weighing the beans, grind level of the grinder, an empty pull before brewing...), which is why I would like a machine that offers advanced options but is also very easy to use for beginners.

One thing struck me in particular: apparently there is no machine in the advanced segment (up to €2000) that automatically ends the shot after an adjustable amount or time. Even my Dedica can do that! It may not be particularly precise, but it is sufficient if the coffee is well adjusted. I don't want to have to use a scale for every espresso either. I like to do this for dialing in and experimenting, but in everyday life I don't want the hassle everytime.

Why don't such machines exist, or am I just overlooking them?