Re:Firefox lost 50M users since 2019
by TranquilMarmot on Saturday July 31, 2021 @01:52PM
(#28020226)
Especially with the prevalence of sites that "work" in browser but really expect you to download yet-another-Electron-app (i.e. Slack)
Develop for Chrome first, all other browsers second. Why worry if other browsers don't work when the solution is "download our desktop Electron application :)"
And that omnipresence of Chrome allows Google to force their own moves as de facto standards, which is dangerous overall.
Firefox is better because it follows standards and it is open-source and it is not tied to a behemoth like Google.
The authors of pages you see perform better in Chrome are indeed not building for the web but rather building for Chrome.