I'm 32 right now and am considering specializing in the microsoft stack as well. I've come across tons of not so sexy, large companies using .NET while working as a contractor at my current job. Companies like Ford or Blue Cross for example.
They don't seem to have the same age bias as these startupy nodejs/react firms, and they pay just as well.
I've seen Hadoop and HDFS dying off, and being replaced by Spark, S3, and Azure Storage. There is also a lot of good work being done by DataBricks in creating an easy to manage spark platform.
Why do people have such a problem with advertising on the internet? A lot of useful websites could not afford to exist without putting up some paid advertisements.
Imo, Apps like uBlock should focus on blocking scams and phishing sites.