I have a 2070 super with dual 1440 monitors. Spider-Man remastered runs at 90fps, high settings, with ray tracing so I’m not sure what this article is getting at with how only the newest high end video cards match consoles.
I often use my second monitor but just from a practical perspective, it doesn’t need to be all that nice. You may consider just upgrading your main monitor. Though, like you mentioned, an ultra wide might be a good choice.
Vinegar is a safari extension that gives you premium’s features. I’m almost certain it can do at least 1080 if not higher.