you can TR regs while not playing and make endless notes on them, record the notes when you turn the software on. i mean, is that okay because you loophole around their rule? i'm not saying TR is as helpful, just that they are both different degrees of the same thing and i think it's a case where you decide it's either black or white. if one crosses some personal line you have for yourself, that's fine, but i do think it's hypocritical to do the lesser degree of one but actively call out others who do a slightly greater degree of the same thing as being cheaters or being unethical
basically it still just seems like you're saying TR only helps you "cheat" a little bit so it's okay, while purchased hand histories pass some universal cheating line. the fact is either one offers an advantage over someone who isn't using it. but the same is true for HEM/PT
it's prob worth noting that with TR you have several tens of millions of hands at your fingertips, more than most people could ever store on their computer in the form of bought/recorded HHs. buying HHs isn't guaranteed to give you a lot of info on a certain reg, but TR can give you a pretty representative sample of info on any reg at any time