Yea, if you do not validate your data on exchanges, to a certain time the data would become invalid. Which is better than revalidating the data with the fear that your privacy is already gone.
It is hard to understand you here, but any data you submit to a centralized service does not become 'invalid', they store your data and do not delete it, but just because you have already lost your privacy doesn't mean you can go on and register on many different other centralized services, because the more your data is in the hands of different centralized services, the more likely it is to get leaked or exposed.
If you want to stop using centralized services and protect whatever privacy you have left, you must close your accounts on centralized services and do not use wallets that are already linked to your identity, if you add using Coinjoins and mixers to it, then you'll get somewhere, people who think their privacy is already lost for good need to do this.