I don't understand this. All the popular/used routing frameworks by default support "open link in new tab" (render <a href="..." />, and listen to onClick to do SPA transition). Developer have to deviate from the easy and commonly documented way of doing things to break this. Any website that doesn't do this is fundamentally broken and built by teams that deliberately disregarded this behaviour.
I don't know which sites use what particular frameworks and paradigms (and I don't recall offhand which sites I've had these problems with), but I frequently have problems with sites that will, when I command-click on a link (standard shortcut to open in new tab on Mac), either open the page in the new tab and change the current tab to it, or just completely ignore my expressed desire and only change the current tab.
"But all the frameworks support doing the good thing! But only people who are bad at it make bad UX!"—well, it's still happening. No amount of contempt for the people doing it changes that.
