Firefox doesn't. But publishers de-prioritizing or being hostile to Firefox does. I keep Chrome up for VirusTotal to scan PortableApps.com releases. In Firefox, it'll throw broken ReCaptcha prompts over and over and over after a certain number of scans per day (pick the thing, next, pick the thing, next x10, etc). And that's with all extensions disabled. Possibly related: VirusTotal and ReCaptcha are owned by Google.
It's not patronage if you don't pay. Google would rather not have you as a user if it costs them any amount of time to support you. The relationship here is adversarial on both sides and pretending otherwise doesn't help anyone.
if firefox users keep flooding their support line with problems then that means firefox users are costing them money. eventually it will be cheaper to build software that actually works.
> But publishers de-prioritizing or being hostile to Firefox does.
Honestly, we should take the same stand against them. Those who are hostile towards Firefox should be publicly named and shamed for sheer incompetence and/or malice.