Seconding electric nan's comment. There is a valid use case for that model IMO, but it also ties your identity to a different fixed IP. Maybe if you were PERFECT about opsec it wouldn't tie to your ID, but in practice nobody is going to be. That's nearly impossible in today's tracking centric world. So data brokers will learn user X has IP Y, nobody else uses that IP, so other connections from IP Y are probably user X too.
There's a benefit to sharing an IP with many other ppl and rotating the IP around. There are drawbacks too ofc.