We had a KYC-free service years ago and now almost every bitcoin-related business asks their users to submit KYC documents.
Years ago we could mine Bitcoin at home but today it's a commercial business and only big mining companies can mine it.
Bitcoin mixers were legal and now you are a criminal if you use them.
Decentralized Exchanges are also getting banned.
What's the next step?
This is why I think that Bitcoin is losing its identity.
These things you mentioned do not prove that bitcoin has lost its identity. Bitcoin is still what it was when it was first created. It is still a decentralised currency that can be transferred across any person irrespective of border. Bitcoin is still not owned or controlled by a single entity, it is still controlled by the market. Bitcoin supply is still limited so there is no inflation with bitcoin.
How people use bitcoin is not what defines it, it's what it is that defines it. People said bitcoin was bad because it was used for illegal activities, is that what bitcoin is?
You can still transfer Bitcoin via peer-to-peer without any centralised exchange; that hasn't changed. The fact that people prefer to use centralised exchanges does not diminish Bitcoin's decentralised nature.
Btw, bitcoin transactions being transparent is one of the may great features of bicoin.