Blood pressure that high over 180 is called a "hypertensive crisis" and yeah it'll commonly cause a stroke or aortic rupture, especially if exacerbated by a heavy weight training workout. It's an acute situation, usually from a drug overdose or acute kidney failure.
And his potassium level is what's called a "critical value" and the lab has to call the doctor about it (in this case there was no doctor so they called him) and document that they did so, because it can cause death. This is again usually caused by an adverse drug reaction or acute kidney failure. At the hospital they would've used insulin to push the potassium back into the cells.
I think for him to admit that what he was doing was killing him would mean that he would have to stop. Just getting on bp meds wouldn't be enough. He'd have to tone down his usage.
I also watched his original YouTube/Facebook video, the 1 year transformation, and it was quite impressive. He did about 10 years of pro bodybuilding in 1 year at a very young age. He was on about 3.5 grams of gear, injected about 40 vials of synthol, and gh/slin/clen/t3/ghrp-6, etc.
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And it seemed to me that the only reason he did the video was to show off his PED knowledge. He very intelligently described what each compound was, why he took it, and what it did to him with very little errors. If I had a drink of beer every time he said something like "I know what I'm doing" I'd very quickly get drunk. And yet he was only 21.
It became very clear this is what he was addicted to, made him feel good, and enjoyed most in life and he was not going to stop. So he rationalized it would catch up with him later rather than sooner. And even when he lost his kidneys it must've been some fluke thing he did, not his overall lifestyle.