There seems to be a gross misunderstanding of how everything works here. Any platform will need to provide data to authorities when “asked properly” - as in, receives an actual order from some enforcing body that has authority on the subject in question. No commercial company will fight the CIA in court to protect your data. The best you can hope for is that they minimize what kind of data they collect about you in the first place - in the case of E2EE, they will only have access to IPs and other metadata such as connection timestamps and nothing else. But all of the services you listed will collect at least IPs and most will do phone numbers as well. The only difference with Telegram is that they’re transparent about it. You can either avoid using commercial platforms altogether, or use them in a way such that data retrieved from them will be useless. But believing that “Signal will never give my IP to law enforcement” is delusional.

Indeed… IPv6 needs to be actively disabled, not enabled, by default.

Can’t you hide bot accounts from your settings?

Unless your ISP provides IPv6 connectivity, which gives every endpoint a globally-routable address. Firewalling at the router only works because of NAT.

You might be interested in CyclOSM to plan your routes