[tonytamps]

The private torrent site crowd are very restrictive on which clients are allowed and even big names like qBit aren't safe enough to assume the version is allowed.

[xdfgh1112]

Although the identification is literally just a string you send when connecting, easy to spoof.

[papyrus9244]

I've never looked at the source code of a PT, but my understanding is that they also implement heuristics to detect strange behaviors, i.e. clients trying to fake their ratio.

[dns_snek]

That part is just for your own protection - these are almost always private trackers with ratio requirements.

If you spoof the client name and your client ends up misbehaving/misreporting you'll just get banned for cheating.

[kkzz99]

I remember using a ratio-fake tool that would basically proxy your reporting to the tracker with the signature of the client you were actually using. It was awesome.