動画内で紹介してるもの
SiteBlock
https://chrome.google.com/webstore/detail/siteblock/pfglnpdpgmecffbejlfgpnebopinlclj
DF Tube
https://chrome.google.com/webstore/detail/df-tube-distraction-free/mjdepdfccjgcndkmemponafgioodelna
BlockTube
https://chrome.google.com/webstore/detail/blocktube/bbeaicapbccfllodepmimpkgecanonai?hl=ja