Well yeah, but Segura was already pretty much untradeable because of his contract. His performance this year makes him fleetingly attractive, but not with the cost of his 2022 paycheck.
So if you throw in a situation where A) the Phillies have to trade him because he had a fight with the manager (not that I think that's true) or B) he's re-acquiring a bit of his "bad clubhouse guy" reputation, you're not getting anything for him, metaphorically speaking. A couple of PTBNL-type guys, or you're paying nearly all his salary.
The Mariners got something for him, but they had take Santana (they still robbed us though, since we took back Nicasio and they found another taker for Carlos).
In both Kingery and Segura's case (if you were really trying to trade Segura), really your best bet is to trade them for some other team's Kingery or Segura.
Lots of baseball left this year but we really have no idea who will be at SS and 2B next year, more than ever, which is crazy considering it is technically an area of depth. Just probably not Kingery, and I was skeptical Didi would stay at SS in 2022 regardless. Maton's as likely as contender as any of them right now (but so are the free agent SSs if they keep spending).