My favourite talk was only 5 minutes long and came from Elie Rotenberg[0]. He demonstrated how React can be used to completely obfuscate the DOM tree.<p>In practice it seems somewhat malicious to do this, however there may be some legitimate use cases too.<p>[0] <a href="https:&#x2F;&#x2F;youtu.be&#x2F;n63XXHY4A7I" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;n63XXHY4A7I</a>