That's a great looking piano! nice finish on it! If you desire to play it a lot, I recommend installing a humidifer in it. The humidifier will help keep it tuned, especially if you are a "heavy hand". He mentions the Winter pianos having an alumnium harp, and that it's problematic. Do you know if yours does? Looks like yours is well cared for, so you probably won't have any problems with it.
I like that piano tech site! lots of great information. The man is right...there's lots of "snobbery" in the industry. I run into it to with the Hammond Organs. The local Hammond dealer won't sell parts to me because I'm not an "authorized tech" and they say I shouldn't be messing around inside one! Hammond organs are not particularly channenging for an electronics tech...if you can work on a vintage TV or radio, you can work on one!