And many of them don't even have a real click action, that I can find. I can't even right-click and manually pick "open in new tab", because the browser doesn't recognize what I'm clicking on as a link.

I agree, ecommerce sites are the place that I most often want to open several items in tabs and decide between them, and the place this function is most often blocked! I wish I could scream at the jerk who implemented this, but that jerk is not among the options of screamable people.

This one drives me nuts. I get it if it’s a single page app, but in many cases right-clicking the same link and choosing “open in new tab” works fine so that’s not the issue.

That’s because of React. The React Router is bad and people don’t spend extra time configuring it against its own bugs.