That is correct, although I have generally been using the IoS version.
It is noteworthy that if you rename a sensor it will also stop any associated routines from running. It sort of makes sense as the routines have names based on the name of the sensor and it must use these to correlate the two, which is probably why you can't rename an Alexa routine as that would disassociate it from the sensor.
Anyway, repeating the above process from my previous post re-establishes the connection between the sensor and the routine.
I am running SmartThings, I’ve noticed that if I setup an Alexa routine with a Smart Things brand door sensor the routine will work when the door opens, but I have 2 doors using recessed Aeotec sensors and the routine will not work on those 2 sensors.
No one expects a $20-$200 device to operate like it's from the year 3000. They expect it to operate as advertised. If Amazon is making a feature publicly available, it should work as described and not cause the consumer undue grief tracking down a solution to what should otherwise work. Your snotty commentary is not only useless in all contexts, it lessens your credibility when offering otherwise reasonable guidance to the user to leave feedback.
If it hasn't been made clear to you in the past, let me help reiterate the basic tenant of civility we're all taught in grade school. "If you don't have anything nice to say, don't say anything at all".