A lot of music was removed. They added really bad limits, like a limit on how many hours you could listen every month. They forced you to create Facebook accounts to register, which means I had to create tons of Facebook accounts to overcome the hours/month limit. And some other things I don't remember.
My experience disagrees. There were 3 albums I used to yearn for and they have all of them. Nothing I've ever tried listening to is missing or has gone missing. I listen probably about 8 hours a day on average and have never hit a limit. I also didn't have to register a Facebook account.
It sounds like you're not a paying customer and go to great efforts to remain a non-paying customer. I'm not sure why they should be prioritizing your use case.
"Meanwhile a new free version called Spotify Open allows Europeans who had not been invited to sign up for free accounts in the past to join without being invited – however, they can only stream up to 20 hours of free music per month, with advertisements."
It sounds like your complaints basically boil down to terms being changed for new accounts. And you don't sound like a paying customer. If I were a betting man, I would bet that you would probably be dissatisfied with literally anything that wasn't just giving you free music on whatever terms you'd like.