I grew tired of SR so I moved to ARAM to find some fun in this game after the removal of RGMs, I would have given TT a shot if it was better and taken more care of otherwise. I loved Hexakill when it was actually a thing, because of the chaos on that small map.
But we all saw this coming with TFT. They went the cheap route of smol indie company to save some server costs and most probably rellocate them into TFT, because when TFT was brought as a "experimental" game mode to see if it would become permanent or not, it was already taken care of during development and "beta", because it was a mode they knew would succeed, because it was a copy paste auto-battler and they saw it already had succeed with Auto-Chess. Then acting "surprised" when it was received with popularity in LoL. It was like the year of Battle Royale with lots of games just adding it and basically guaranteed a hot release and a stream of players.
They made a properly made game mode including new maps, animations, UI and textures from the scratch for a supposed experimental mode waiting to be permanent, while they just copy pasted textures from SR to shape a new map with sloppy and even missing textures for NB. NB was truly an experimental mode, they made it visuallly boring on the first round and no jungle pressence by not being able to gank from other different sides and gave events overkilling buffs, like Caitlyn's UNDODGEABLE and PERMANENT buff to minions. Then they fucked it up even more on the second round, with a more visually polished map, but an event attached to it, making players constantly pick specific champions and gameplay affecting event reward based missions, that lots of people playing the "experimental new mode with expectations to be permanent" didn't find fun, because people weren't playing it to have fun, but to complete missions. Sorry I got wrapped in this NB big rent, I wanted to express it after that part in the video you compare NB with TT, as well as share my disgust for TFT, which is a reason they're removing TT, we all know that.
The most laughable part of killing TT off is the lies they spit on everyone. Lies that can be factually checked with patch notes.