Instead of that suggestive ad being inserted into the video. Why not use auto-play or recommended videos section? Suggested videos in the menu work great, better even, in your case scenario for content discovery.
I don't watch YouTube with ads and I don't subscribe to YouTube Premium but I pretty much doubt in-video content suggestions disguised as ads will do a better job of predicting what I'll watch next over menu video recommendations.
I'm not happy about seeing MKBHD's video in that restaurant, I don't care at all. I also don't care about seeing that ad (or any ad for that matter).
The original comment I was replying to mentioned watching a 40 minute music video placed as a YouTube ad. I chimed in with my experience of seeing a long tech review video placed as an ad.
>I found it pretty smart, because I can imagine myself succumbing to watching a full video that was inserted as an ad if it's interesting enough.
I'm not praising the ad as a user. I'm explaining why it might be smart from the POV of the advertiser (in this case MKBHD), because it serves their goals.
However, if I was at home, opened YouTube just to entertain myself and opened one of the algorithm suggested videos, then – in that situation – an interesting video from a channel that is unknown to me, inserted as an ad could hook me and could lead to me subscribing to said channel.