Well real anonymity is very hard to get. First of all tor is not anonymous. It offers some degree of protection but there are many known attacks (starting from corelation attacks on corrupt exit nodes and zero days vulnerabilities in tor browser to isolation attacks on hidden services) that can be used to reveal both users as well as hidden services as evidenced by the large number of arrests and raids related to darkweb websites. I think they close a marketplace every month
That being said if you want to be truly anonymous you will always combine several measures such as
- tor (which is probably the only legal one and least secure + most likely to get spied on corrupt exit nodes)
- chaining proxies on hacked servers (that you know for sure keep no logs) - this is the easiest
...
Indeed. Real anonymity and privacy is very hard. That's why you need always many complementary components to play together, and that's why there is no "one best" solution (it always comes down to a series of compromises). And I understand now what you meant by the link between illegal activities and anonymity. Although I believe you can still achieve very high level of anonymity even without resorting to illegal means.
Now, you mention chaining proxies (and other similar measures) ... but in the context of XSPEC what for? Since XSPEC is natively on Tor it never leaves the the network and never uses exit nodes. That's one of the great features, which other coins that have the wallet outside Tor and use Tor for transportation don't have. Or did I miss your point?