Is it true?
I’ve never heard any report saying he was alive and talking when arriving at hospital.
I do not believe it is true.
Per Wikipedia…..it’s very left leaning and can be loose with the facts when it wants to be
The murder of Seth Rich occurred on July 10, 2016, at 4:20 a.m. in the Bloomingdale neighborhood of Washington, D.C.[2] Rich died about an hour and a half after being shot twice in the back.
Less than one minute after the gunfire, police officers found Rich conscious with gunshot wounds.[39] He was taken to a nearby hospital, where he died[40][41][42] over 1+1⁄2 hours after being shot.
That he was not shot in the head is seen as evidence against the shooting having been an “assassination”.
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Per Listverse …. https://listverse.com/2017/05/24/top-10-facts-about-the-death-of-seth-rich/
Fact 7 ….. When the emergency responders found him, he was still alive. He was conscious, breathing, and according to the officers who found him, “quite talkative.” While Seth was rushed to the hospital, he chattered on—something he had a reputation for. He was known to be a joker and a talker. When Seth’s brother heard how he had babbled after getting shot, he joked, “Yep, that was 100 percent my brother.”[4]The police refuse to reveal exactly what Seth told them
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One can argue that nothing good comes from war. But one thing that can come from war is medical treatment/advancement. Basically, military doctors can experiment on people is the quest of “life over limb”.
Some of those advancements, which filtered down to civilian care, have saved lives and can be responsible for lowering the murder rate.
Under experienced medical care in DC, folks that know gunshots, something happened in that hospital.