If I'm not wrong then most reputed members of the forum were actively applying the signature on their profiles back then because at that time it was one of the most reliable mixers one can think of. But when they turned into frauds and did wrong things then most users remove that signature from their profiles.
Those who were applying the signature including o_e_l_e_o, weren't aware that a project like Chipmixer can do money laundering and other shady activities and if they were aware of that fact then they would most probably not apply the signature on their profiles. That's why blaming o_e_l_e_o or anyone else who were applying the signature on their profiles isn't a justifiable thing.
No one willingly applies the signatures of the platforms that do fraud with users. I believe 1xBit also launched their signature program on this forum but none of the good members applied that signature on their profiles because they were sure that the casino does shady things with the players and all those who applied the signature on their profiles got red tags from the reputed members of the forum.
Imagine there's a way to do a casino on Bitcoin that doesn't let the operator cheat or steal from players. Now imagine there's a casino that lets the operator cheat or steal from players, but you trust them not to cheat or steal. If someone went to the thread of the trustless casino and told people to use the trusted casino, anyone who listens will only end up in a worse position, and never in a better one.
You can't get cheated or stolen from with Wasabi's coinjoin, but you can get cheated or stolen from with ChipMixer. o_e_l_e_o told people to abandon the trustless software and lose their funds to the trusted custodian.