95% of the posts are in barely comprehensible English. Seemingly every guide tells you to run a random binary from a file sharing host or generic domain.
As a rule, source code is non-existent. Downloads are attributable to a forum handle in the best case. Oh and you have to run it with elevated privileges to both your host computer and the device. Even the shadier warez communities have more accountability and trust.
In my opinion Google has really done a huge disservice by dropping support for their devices so rapidly and condoning planned obsolescence by handset manufacturers. They are directly responsible for channeling a significant fraction of Android users into this mess.
I imported my Galaxy S8+ to save over $400AUD on retail. This meant I needed to find a ROM on an obscure site to flash to the phone using a stolen (?) piece of factory software. I can only trust my phone because a Samsung in default configuration won't accept a "modified" update - only one from and signed (?) by Samsung themselves.
Is LineageOS still using "test-keys"? It's been possible to do much better for years: https://mjg59.dreamwidth.org/31765.html
If you're referring to Odin, there's an open-source alternative in Heimdall (https://www.glassechidna.com.au/heimdall/).
You mean ODIN! That's probably leaked. Many good memories of that tool.
The fact that people seem to be scared of and are basically unwilling to make their own decisions of trust in deference to central authorities says a lot about the state of society today... "distributed trust" and communual free sharing was the norm, until companies started to herd users into their walled gardens and control them by using the "security" argument.