Very impressive progress. I think it speaks to the author's commitment and dedication, as adding 50 new cards per day is a lot . Most people will burn out pretty quickly at that rate. I recommend something like 10-20 per day. I'm also one of those people that say you should make your own cards from material you're immersing in. When going through a predefined list of words like that I think you're bound to end up lea…
You are correct in that a decent chunk of the words are relatively useless, and I forgot many of them already after stopping Anki for a few months. There were also some words that I had no idea how to use, as you said. However, I did some extra looking-up of difficult words, and the deck included example sentences for many of the words. Also, I definitely claim that your method is more effective, but clearly this one at least worked well enough to do what I did.