No. The browser vendors left the W3C. When the final browser vendor (Microsoft) left and joined the other vendors in WHATWG, the vendors collectively sent a let

No. The browser vendors left the W3C. When the final browser vendor (Microsoft) left and joined the other vendors in WHATWG, the vendors collectively sent a letter to W3C asking W3C to please stop copying and introducing errors into the standards WHATWG wrote. See e.g. https://www.zdnet.com/article/browser-vendors-win-war-with-w3c-over-html-and-dom-standards/ https://www.zdnet.com/article/browser-vendors-win-war-with-w...