Don't recommend Orbot IsolateDestAddr (#2121)

Signed-off-by: Freddy <freddy@privacyguides.org>
Signed-off-by: Daniel Gray <dngray@privacyguides.org>

docs/tor.md

@@ -71,7 +71,7 @@ The Tor Browser is designed to prevent fingerprinting, or identifying you based
         - [:simple-appstore: App Store](https://apps.apple.com/us/app/orbot/id1609461599)
         - [:simple-github: GitHub](https://github.com/guardianproject/orbot/releases)
 
-For resistance against traffic analysis attacks, consider enabling *Isolate Destination Address* in :material-menu: → **Settings** → **Connectivity**. This will use a completely different Tor Circuit (different middle relay and exit nodes) for every domain you connect to.
+We previously recommended enabling the *Isolate Destination Address* preference in Orbot settings. While this setting can theoretically improve privacy by enforcing the use of a different circuit for each IP address you connect to, it doesn't provide a practical advantage for most applications (especially web browsing), can come with a significant performance penalty, and increases the load on the Tor network. We no longer recommend adjusting this setting from its default value unless you know you need to.[^1]
 
 !!! tip "Tips for Android"
 
@@ -115,3 +115,5 @@ For resistance against traffic analysis attacks, consider enabling *Isolate Dest
 Snowflake does not increase your privacy in any way, nor is it used to connect to the Tor network within your personal browser. However, if your internet connection is uncensored, you should consider running it to help people in censored networks achieve better privacy themselves. There is no need to worry about which websites people are accessing through your proxy—their visible browsing IP address will match their Tor exit node, not yours.
 
 Running a Snowflake proxy is low-risk, even moreso than running a Tor relay or bridge which are already not particularly risky endeavours. However, it does still proxy traffic through your network which can be impactful in some ways, especially if your network is bandwidth-limited. Make sure you understand [how Snowflake works](https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/wikis/home) before deciding whether to run a proxy.
+
+[^1]: The `IsolateDestAddr` setting is discussed on the [Tor mailing list](https://lists.torproject.org/pipermail/tor-talk/2012-May/024403.html) and [Whonix's Stream Isolation documentation](https://www.whonix.org/wiki/Stream_Isolation), where both projects suggest that it is usually not a good approach for most people.