It depends on your threat model. Tor is focused on hiding from small-scale passive adversaries (eg, you're in Iran and don't want the Iranian government to see what you're doing. Or your ISP. Or any single node operator). Even the original Tor paper makes it clear that Tor isn't secure against a "global passive adversary" that can observe a large portion of global internet traffic, like the five eyes likely can today.
If you want to avoid global passive adversaries, a mixnet like Nym can work. I'm also working on a related project which takes a different approach of building your own circuit of proxy servers manually with lots of traffic padding: https://github.com/markasoftware/i405-tunnel
If you want to avoid global passive adversaries, a mixnet like Nym can work. I'm also working on a related project which takes a different approach of building your own circuit of proxy servers manually with lots of traffic padding: https://github.com/markasoftware/i405-tunnel