This topic really hits home—had to chime in.
I spent the last couple years hopping between anti-detect browsers. The fingerprint masking was impressively granular, but every install left me with this weird dissociation: "Is this computer even mine anymore?" OP's concern about "shady companies" isn't paranoia—closed-source, offshore-registered, TOS stuffed with liability shields. If something goes wrong, you don't even know who to yell at.
I lost a whole batch of accounts once, suspected environment leakage from the browser side. But what can you do? Can't audit it, nowhere to complain.
So my current stance: I don't run any anti-detect tools locally.
Not saying this or that browser is definitely compromised—it's the "put all your eggs in my basket, but I won't show you what's inside" model I can't stomach.
Now I run cloud phones. Environment lives server-side, local machine is just a remote desktop. Fingerprints, IP, device params—all generated upstream. My local computer stays so clean it doesn't even have cache. Amazon, TikTok, FB, six months plus, no incidents.
I tried VMs too, but some anti-detect browsers sniff out virtualization and throw errors mid-run. More headache than help.
OP asked "do you trust them." My answer: I don't, so I don't use them. Different path, same job gets done.