Revert to Youtubes old design

disablePolymer.js

/* property
    cookie, forEach, includes, join, split
*/

// Go to youtube
// Open the dev tool
// Go to the console section
// Paste the code below

const cookie = document.cookie.split(' ')
let counter = 0
let atThis
cookie.forEach((element) => {
  element.includes('PREF') ? atThis = counter : counter += 1
})
cookie[atThis] = 'PREF=al=en&f5=30030&f6=8;'
delete document.cookie
document.cookie = cookie.join(' ')

// Or use this oneliner
const cookie=document.cookie.split(' ');let counter=0;let atThis;cookie.forEach((element)=>{element.includes('PREF')?atThis=counter:counter+=1});cookie[atThis]='PREF=al=en&f5=30030&f6=8;';delete document.cookie;document.cookie=cookie.join(' ');