Trinkets also don't have agency. What if someone wouldn't want to be brought back to life?
Trying another way, let's say the technology is created to bring Finney back, but it would only keep him alive for 4 hours, and after that there would be no chance of him ever returning. Would it be violating his beliefs for future-folk to bring him back for those 4 hours just because they want to hear what he has to say?
Depends - is there some magical event that means this is the only shot? Like, he's on a collision course with a sun and is going to impact in 4 hours, but we can remotely activate for those hours?
Otherwise, I think the proper response is "keep working on this technology until we've gotten that 4 hour window up to something useful."
Trying another way, let's say the technology is created to bring Finney back, but it would only keep him alive for 4 hours, and after that there would be no chance of him ever returning. Would it be violating his beliefs for future-folk to bring him back for those 4 hours just because they want to hear what he has to say?