I think that's egotistical gatekeeping. There's no basis for 64GB being "pro" and 32GB not (or even 16GB or 8GB, for that matter). You can make millions of dollars on an MacBook Air with 8GB of RAM. Your use case does not dictate what is a reasonable amount for other professionals.
Latency! Lack thereof, actually. I bought an Ipad just to be able to use them. My second Apple product. The first was a Macintosh SE. That says something.
Both of these features are available in YouTube on chrome if you pay for YouTube. I know paying for web services isn't something people like, but there it is.
You can disable the ads in the steam client by going into Setting > Interface > Uncheck "Notify me about additions or changes to my games, new releases, and upcoming releases."