There seems to be other channels uploading content of this particular street as well.

"SBC News": https://www.youtube.com/channel/UCB-2gc-TlQ6L-KE20xP7mEQ/videos

These two look very similar in terms of content, as if 'SBC News' is perhaps an alt of 'kimgary'. 'kimgary' is probably an ethnic Korean judging by the language on some of his early uploads. 'SBC News' only uploads content from that specific street. 'kimgary' also stopped adding Korean to the descriptions of his videos concerning that street. The descriptions on their uploads are identical. They also both have a similar (albeit not identical) intro on their videos.

My guess is that 'kimgary' realized that his content is taking off and that he should film this street obsessively before the opportunity to profit from it ran out. To maximize his monetization profits, he built at least one other channel so that he could reuse some of the same footage.

Here's another channel which also covers the same street sometimes, though this one does not appear to upload the same content. This channel's videos tend towards being filmed at night whereas the other two are instead filmed at day.

https://www.youtube.com/channel/UC1MveHv1lTVBzdM5VYZkcBQ/videos

The commenters think the 'zombie' effect commonly seen in these videos is symptomatic of heroin use, as well as of something called 'Flakka'.

That street looks nasty on Google Maps (as of 2019), but nowhere near as bad as what is portrayed in 2021. My guess is that a mixture of Covid and the resulting lock-downs and mass closure of businesses, and to a lesser extent the Biden Administration more generally, has negatively affected that area. It's clearly a deep blue city—controlled by Democrats ever since 1952.