Jones refused to go into details over the exclusion of Te'o who was previously reprimanded for a late-night drinking session with Billy Vunipola at the end of this year's Six Nations.
"Firstly I think it's always nice to bring new blood in, it always freshens things up", Jones said.
England coach Eddie Jones has labelled Scott Barrett's red card as "ridiculous", and called on World Rugby to be consistent after he claimed two Welsh players escaped red cards following similar offences against England on the weekend.
"Also about the attitude of the players, not trying to push the pass or do something extraordinary in defence, so that's a good sign for us".
"We have had that conversation with Ben, he understands it", the former Australia and Japan coach added.
Yet his party for Japan features an uncapped player in Bath wing Ruaridh McConnochie, with three of his 31 - scrum-half Willi Heinz, flanker Lewis Ludlam and hooker Jack Singleton all only making their England debuts in Sunday's 33-19 warm-up win over Wales at Twickenham.
"To leave the scene for a period of time like I did and come back in and see how much the younger guys and the not-so-senior boys that were 18 months ago, to have seen them grow... they are starting to talk a lot more, their leadership roles have grown a lot more in the group - really impressive". "We feel for them".More news: Majority of British people support "Brexit by any means", poll finds
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But captain Owen Farrell insists England can be trusted in the Far East and that there are no bad apples in the squad.
"We'd like to take three in every specialist position but that would leave us short in other positions, so we've made a decision to go with two at scrum-half and two at tighthead", Jones said.
Jones named his England squad almost a month before the deadline and well before the other major contenders.
"When we got in that arm-wrestle part we really stayed in the fight and I was really pleased about that".
"We want the squad to know early and now we can get on and be the best prepared England side there has ever been, ready to win the World Cup".
England then travel to Kobe to face the United States on September 26, before games against Argentina on October 5, and France on October 12.