That's not what I'd call looking into his injuries properly.
IMO clearly has a completely fucked ankle. They are only getting more and more frequent, and any kind of contact on his ankles seems to put him out for a minimum of 10 days which suggests to me something is permanently damaged and he's playing through it.
September 2016 Ankle injury.
March 2017 He reinjures the same ankle.
March 2018 Ankle injury again.
January 2019 Ankle injury.
April 2019 Ankle injury.
November 2020 Ankle injury (this is reported as unknown, but it happened after he limped off with after a challenge on his ankle vs. Iceland)
January 2021 Ankle injury.
April 2021 Ankle injury.
Spurs do rely on him, but he's gone through summers like 2019 with no international tournaments and not had a corrective surgery, so it seems unlikely to me that anything can be done to fix it. He's also got a habit of re-injuring it when they think it's fixed (ie being out for 40 days in Jan 2019 then coming back for 2 weeks and missing another 50 days)
I'm sure he'll keep playing through it, but it's not going to get better on its own, in fact these repetitive injuries usually just get worse and worse as a player approaches 30. I do not believe he's going to make it far past 30 at the top level, but....who cares? There will always be world class strikers around and if money is no object we'll get 2 or 3 years out of Kane and fuck him off when he can't produce any more.